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 EV<mailto:ev@lists.evdl.org> To: Cor van de Water<mailto:cwa...@proxim.com> ; Electric Vehicle Discussion List<mailto: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.com<http://www.proxim.com/> Email: cwa...@proxim.com<mailto:cwa...@proxim.com> Private: http://www.cvandewater.info<http://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.org<mailto: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://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) -------------- next part -------------- A non-text attachment was scrubbed... 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