Re: [EVDL] adding solar charging to 12 volt battery on LEAF
On 07/16/2015 06:50 PM, EVDL Administrator via EV wrote: On 16 Jul 2015 at 9:12, harry henderson via EV wrote: An SLI battery is designed for many shallow cycles starting an ICE. With most EVs that have DC:DC converters, the house battery is used in much the same way. In fact it's even less stressed, since it's only there to close the main contactor. That should take much less energy than cranking an ICE. As soon as the contactor is closed, the DC:DC is recharging the house battery -- or should be. It also keeps the radio and any other live things running. If you don't drive it for a period that may constitute a fair drain. That said, I've swapped my EVs lead-acid starter battery with a tiny 7Ah lithium ion from Battery Tender and it seems to hold up for a least a week (the longest I've gone without driving so far). --Rick ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
A Leaf is never really off. It turns off the displays and indicators etc. but there is communication, the BMS, and who knows how many computers that are always on. My SL model phones in when it is fully charged, unplugged, a/c turned on, etc. The 2011 would run down the 12 volt accessory battery, but they upgraded the software in 2012 to check the accessory system voltage and turn on the DC-DC periodically to keep the 12 volt topped up when the car is off. They added the small solar charger (on some models) to help with the 12 volt system off draw as well. If the 12 volt battery is going dead in your 2012 and up, there is something broken. You can check the voltage on your 12v accessory battery and check the draw with a DC clamp-on. Likey something is staying on when it should be switching off when you exit the car. Glove box light? Trunk light? Here is the normal 12 volt current draw from the Leaf owner's forum: - For the first ten minutes or so the car drew 330mA. - After about 10 minutes, the tare current dropped to a lower value. It normally sat at 15mA, but pulsed up to 24mA every two seconds or so. - Occasionally it would rise up to 115mA for a few seconds. I do not know how often this occurs. Also, if you store your Leaf unplugged with only a few bars of capacity, it may decide not the charge 12 volt. You should leave it plugged in if you are going away for several weeks. Bill D. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
If you really want to know - measure the drain. Initially (after turning off the car or when just plugging in the battery) there will be a good spike, so make sure that your meter or external shunt can take that or use the trick to bypass the meter with a wire until the drain settles down (which can take several minutes, for example the Classic Prius keeps the wires glowing for the green fluorescent) display for a while after the door of the car has closed - there is no display but the software apparently still has a timeout on those things. You can see the wires glow in the dark) There may be periodic drains (comuters waking up or transmitters reporting home or trying to contact your key FOB) but you should get a good idea how many milliamps are going with the car off, then simply divide the 7Ah by that current and you have the hours-till-death. Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of rick via EV Sent: Friday, July 17, 2015 12:19 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF On 07/16/2015 06:50 PM, EVDL Administrator via EV wrote: On 16 Jul 2015 at 9:12, harry henderson via EV wrote: An SLI battery is designed for many shallow cycles starting an ICE. With most EVs that have DC:DC converters, the house battery is used in much the same way. In fact it's even less stressed, since it's only there to close the main contactor. That should take much less energy than cranking an ICE. As soon as the contactor is closed, the DC:DC is recharging the house battery -- or should be. It also keeps the radio and any other live things running. If you don't drive it for a period that may constitute a fair drain. That said, I've swapped my EVs lead-acid starter battery with a tiny 7Ah lithium ion from Battery Tender and it seems to hold up for a least a week (the longest I've gone without driving so far). --Rick ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
If you have left the Leaf ON while pumping the tire with the 12V compressor then the DC/DC converter has supplied the current from the HV pack, no power was taken from the aux battery. If the Leaf was OFF, then yes- that drains the aux battery especially if it was already weak. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.comPrivate: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626Tel: +91 (040)23117400 x203 -Original Message- From: EV on behalf of Jamie K via EV Sent: Wed 7/15/2015 10:44 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF Your air compressor might be a factor, I don't know. I can say that while we've also had pesky tires with very slow leaks, our air compressor can run on 120 volts in the garage so filling them every few weeks (until we finally had them fixed) didn't impact the LEAF's 12 volt battery. Cheers, -Jamie On 7/15/15 11:07 PM, harry henderson wrote: S, like i said, battery was at 4 volts and i had to jump it to start it [my first EV/EV jump] i had to jump it two more times that day then i got a new battery, however, the 'old' battery was only a month old. as another data point, i did need to fill up one tire several times as it had a slow leak, carmax also fixed that, but i might have been using the 12 volt too much? harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 On Wed, 7/15/15, Jamie K via EV ev@lists.evdl.org wrote: Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF To: Electric Vehicle Discussion List ev@lists.evdl.org Date: Wednesday, July 15, 2015, 8:12 AM As another data point, so far we haven't noticed any problems with the 12 volt battery in the 2013 LEAF that we bought about a year and a half ago. What model LEAF did you buy? S, SV or SL? What symptoms have you had? Cheers, -Jamie On 7/14/15 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 4844 bytes Desc: not available URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150715/f0c75bc9/attachment.bin ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
For the last 15 years, I have been using a onboard smart charger made by Schumacker Model WM-6000A. Set at 30 amp and set for a deep cycle battery. Tap off the main AC input plug with a control switch and circuit breaker at 20 amperes. The charge cycle for a 12 volt deep cycle battery may get up to 15 volts and then settles down to 13.3 volts as a maintainer. While the EV is park and or is charging by the main charger and the accessory 12 volt charger, the DC-DC converters are off line. For a 12 volt deep cycle battery, the converters should be set to 14.5 volts. Using a 12 volt meter on the dash, I then have to switch to 13.5 volts when the battery gets up to 14.5 volts. I do not use the DC-DC converters for the last two years, but use a deep cycle alternator to see what happens. After every run, my 12 volt battery is mostly always charge. The onboard 12 volt charger goes into the maintainer mode in with one minute. Can get about 10 to 12 years out of a 12 Volt Deep cycle battery. The battery I have now was install on Sept 4 2009. Roland - Original Message - From: harry henderson via EVmailto:ev@lists.evdl.org To: Cor van de Watermailto:cwa...@proxim.com ; Electric Vehicle Discussion Listmailto:ev@lists.evdl.org Sent: Thursday, July 16, 2015 10:12 AM Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF my main question is if the solar charging will damage the existing 12 volt battery or do i need to put in a true deep cycle battery to replace it? right now i'm thinking of using morningstar's smallest charge controller unless anyone else has a better idea http://www.morningstarcorp.com/products/sunguard/http://www.morningstarcorp.com/products/sunguard/ That is strange, because 13V is too low to fully charge a lead-acid battery, especially when new, I have seen AGMs after being off-charge for a day, they still read 13.25V When I put lead-acid on a constant voltage (current limited) supply to recharge then I typically set it to at least 13.6V if occasionally the supply might be powered off or the battery disconnected, so it needs to recharge relatively fast, else I might set it to float at 13.5V and you will then see the float charge current go to a very low trickle. I wonder what the reason is that Nissan lowered the voltage to 13.0V Anyway, a solar charger is by definition a current limited device and low current at that, so it will typically drop to the DC/DC output voltage and only in case the vehicle is turned off a long time while the panel is constantly charging, might it be able to bring the battery voltage up to 13.5V or whatever voltage you regulate the panel output to. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.comhttp://www.proxim.com/ Email: cwa...@proxim.commailto:cwa...@proxim.com Private: http://www.cvandewater.infohttp://www.cvandewater.info/ Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -Original Message- From: EV on behalf of David Rees via EV Sent: Wed 7/15/2015 5:45 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF On Tue, Jul 14, 2015 at 10:43 PM, Bill Dube via EV ev@lists.evdl.orgmailto:ev@lists.evdl.org wrote: If you have a good charge regulator with your solar panel, the rest of the 12 volt system won't even know that the 12 volt is charging. You should buy a charge regulator that float charges the battery at ~13.5 volts. You just want to keep the 12 volt from going flat between uses. Just keep in mind that the LEAF only floats the battery at 13.0V when the car is on most of the time. Not sure what will happen if you try to push the battery above that while the DC-DC inverter is on. It could be OK, but just beware. -Dave ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usubhttp://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.orghttp://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRAhttp://groups.yahoo.com/group/NEDRA) -- next part -- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 3984 bytes Desc: not available URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150715/9a04cae6/attachment.binhttp://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150715/9a04cae6/attachment.bin ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usubhttp://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.orghttp://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRAhttp
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
On Jul 16, 2015, at 3:50 PM, EVDL Administrator via EV ev@lists.evdl.org wrote: The question here is, why aren't house batteries lasting? Is the Leaf not properly charging it? Could it be that the dealer supplied batteries are junk? I have 2011 Leaf with 41,000 miles. The original house battery has been fine so far. Ed ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
On 16 Jul 2015 at 9:12, harry henderson via EV wrote: my main question is if the solar charging will damage the existing 12 volt battery or do i need to put in a true deep cycle battery to replace it? I can't think of any reason that that solar charging it would damage it. Can anyone else? In any application whether you choose a deep cycle or SLI (starting, lighting, ignition) battery depends on the use of the battery, not on how it's charged. An SLI battery is designed for many shallow cycles starting an ICE. With most EVs that have DC:DC converters, the house battery is used in much the same way. In fact it's even less stressed, since it's only there to close the main contactor. That should take much less energy than cranking an ICE. As soon as the contactor is closed, the DC:DC is recharging the house battery -- or should be. The question here is, why aren't house batteries lasting? Is the Leaf not properly charging it? Could it be that the dealer supplied batteries are junk? David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to evpost and etpost addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
If you put that dead battery on a fixed 14V power supply (current limited) for a *very* long time (it might need days to fully recover) then you probably have a reasonable good battery back. The issue is that a really dead battery does not take much charge current, so even after a jump and driving it for an hour, it might have accepted hardly any current so if you turn it off and try to restart later, it might fail and you need to jump it again. If you have a good old stupid battery tender (trickle charger) or a jump start device that will simply constantly provide 14V as long as plugged in, that can help you to recover this almost new battery. I once bought a battery that was installed in a car that had a bad alternator, so it was run down and then the owner wanted to bring it back so they put their old battery back (which was OK) and fixed the alternator but forgot to return the new battery. It sat for 1/2 year and was really dead, so it would not charge. I put it on a 15V 1/2 Amp limited power supply until it started taking a decent charging current (one whole day later) and then adjusted the supply to 13.8V 10A to charged it fully and I have used that dead battery for years in my EV as aux battery. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.comPrivate: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626Tel: +91 (040)23117400 x203 -Original Message- From: EV on behalf of harry henderson via EV Sent: Wed 7/15/2015 10:07 PM To: Jamie K; Electric Vehicle Discussion List Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF S, like i said, battery was at 4 volts and i had to jump it to start it [my first EV/EV jump] i had to jump it two more times that day then i got a new battery, however, the 'old' battery was only a month old. as another data point, i did need to fill up one tire several times as it had a slow leak, carmax also fixed that, but i might have been using the 12 volt too much? harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 On Wed, 7/15/15, Jamie K via EV ev@lists.evdl.org wrote: Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF To: Electric Vehicle Discussion List ev@lists.evdl.org Date: Wednesday, July 15, 2015, 8:12 AM As another data point, so far we haven't noticed any problems with the 12 volt battery in the 2013 LEAF that we bought about a year and a half ago. What model LEAF did you buy? S, SV or SL? What symptoms have you had? Cheers, -Jamie On 7/14/15 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
That is strange, because 13V is too low to fully charge a lead-acid battery, especially when new, I have seen AGMs after being off-charge for a day, they still read 13.25V When I put lead-acid on a constant voltage (current limited) supply to recharge then I typically set it to at least 13.6V if occasionally the supply might be powered off or the battery disconnected, so it needs to recharge relatively fast, else I might set it to float at 13.5V and you will then see the float charge current go to a very low trickle. I wonder what the reason is that Nissan lowered the voltage to 13.0V Anyway, a solar charger is by definition a current limited device and low current at that, so it will typically drop to the DC/DC output voltage and only in case the vehicle is turned off a long time while the panel is constantly charging, might it be able to bring the battery voltage up to 13.5V or whatever voltage you regulate the panel output to. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.comPrivate: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626Tel: +91 (040)23117400 x203 -Original Message- From: EV on behalf of David Rees via EV Sent: Wed 7/15/2015 5:45 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF On Tue, Jul 14, 2015 at 10:43 PM, Bill Dube via EV ev@lists.evdl.org wrote: If you have a good charge regulator with your solar panel, the rest of the 12 volt system won't even know that the 12 volt is charging. You should buy a charge regulator that float charges the battery at ~13.5 volts. You just want to keep the 12 volt from going flat between uses. Just keep in mind that the LEAF only floats the battery at 13.0V when the car is on most of the time. Not sure what will happen if you try to push the battery above that while the DC-DC inverter is on. It could be OK, but just beware. -Dave ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 3984 bytes Desc: not available URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150715/9a04cae6/attachment.bin ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
S, like i said, battery was at 4 volts and i had to jump it to start it [my first EV/EV jump] i had to jump it two more times that day then i got a new battery, however, the 'old' battery was only a month old. as another data point, i did need to fill up one tire several times as it had a slow leak, carmax also fixed that, but i might have been using the 12 volt too much? harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 On Wed, 7/15/15, Jamie K via EV ev@lists.evdl.org wrote: Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF To: Electric Vehicle Discussion List ev@lists.evdl.org Date: Wednesday, July 15, 2015, 8:12 AM As another data point, so far we haven't noticed any problems with the 12 volt battery in the 2013 LEAF that we bought about a year and a half ago. What model LEAF did you buy? S, SV or SL? What symptoms have you had? Cheers, -Jamie On 7/14/15 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
Your air compressor might be a factor, I don't know. I can say that while we've also had pesky tires with very slow leaks, our air compressor can run on 120 volts in the garage so filling them every few weeks (until we finally had them fixed) didn't impact the LEAF's 12 volt battery. Cheers, -Jamie On 7/15/15 11:07 PM, harry henderson wrote: S, like i said, battery was at 4 volts and i had to jump it to start it [my first EV/EV jump] i had to jump it two more times that day then i got a new battery, however, the 'old' battery was only a month old. as another data point, i did need to fill up one tire several times as it had a slow leak, carmax also fixed that, but i might have been using the 12 volt too much? harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 On Wed, 7/15/15, Jamie K via EV ev@lists.evdl.org wrote: Subject: Re: [EVDL] adding solar charging to 12 volt battery on LEAF To: Electric Vehicle Discussion List ev@lists.evdl.org Date: Wednesday, July 15, 2015, 8:12 AM As another data point, so far we haven't noticed any problems with the 12 volt battery in the 2013 LEAF that we bought about a year and a half ago. What model LEAF did you buy? S, SV or SL? What symptoms have you had? Cheers, -Jamie On 7/14/15 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
On Tue, Jul 14, 2015 at 10:43 PM, Bill Dube via EV ev@lists.evdl.org wrote: If you have a good charge regulator with your solar panel, the rest of the 12 volt system won't even know that the 12 volt is charging. You should buy a charge regulator that float charges the battery at ~13.5 volts. You just want to keep the 12 volt from going flat between uses. Just keep in mind that the LEAF only floats the battery at 13.0V when the car is on most of the time. Not sure what will happen if you try to push the battery above that while the DC-DC inverter is on. It could be OK, but just beware. -Dave ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
As another data point, so far we haven't noticed any problems with the 12 volt battery in the 2013 LEAF that we bought about a year and a half ago. What model LEAF did you buy? S, SV or SL? What symptoms have you had? Cheers, -Jamie On 7/14/15 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] adding solar charging to 12 volt battery on LEAF
the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] adding solar charging to 12 volt battery on LEAF
My 2012 SL Leaf has a small solar panel for just this purpose on the roof of the car near the back. You are just doing the same thing yourself. If you have a good charge regulator with your solar panel, the rest of the 12 volt system won't even know that the 12 volt is charging. You should buy a charge regulator that float charges the battery at ~13.5 volts. You just want to keep the 12 volt from going flat between uses. Bill D. On 7/14/2015 10:41 PM, harry henderson via EV wrote: the 2013 nissan leaf has a known issue with its 12 volt battery either by lack of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt battery at 4 something volts a couple weeks after i got it. carmax replaced it but what they replaced was not the original battery. the battery they replaced was only a month old and i don't know how many batteries this 2 year old EV has used in its 10,000 miles of life. i'm considering hooking up a solar charging unit to the battery. i've been using solar charging systems on my 12 volt systems as their only power source for 10 years now on my homemade EVs, however, this is a little different, since it supposed has a DC/DC system. the options i've pondered include: 1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing battery 2. add a regulated [charge controller: 10-20 watts] to existing battery 3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is larger than existing battery, maybe about 30% larger] #3 is what i've been using very successfully for 10 years, but again this is different situation, eager for other folk's suggestions i realize this might void some or all warranty issues, please don't respond if that is your only contribution, thanks harry Albuquerque, NM current bike: http://www.austinev.org/evalbum/1179 current non-bike: http://evalbum.com/1000 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
