Re: [EVDL] 20s A123 battery pack for ebike
On 6/25/20 11:35 AM, Lawrence Rhodes via EV wrote: Here is the response from the seller on eBay. Confuses seller with manufacturer. hi sir, you bought 20s bms , it has two cable , you only as my board port to connect it,. for you said item # 113793800015 , i suggest you ask that seller how to wiring it , We only sell protection boards, as long as there is no problem with the wiring method, the product has no quality problems. I suggest you ask a more professional friend to solve the problem for you. you can take photo , i help you ask my supplier whether can use it. so sorry again for you. best regards China is dominating world commerce. Those without chinese language skill are at a disadvantage. OTOH, a market opportunity exists for those with China skill and want provide service for vetting and documenting chinese products. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] 20s A123 battery pack for ebike
Here is the response from the seller on eBay. Confuses seller with manufacturer. hi sir, you bought 20s bms , it has two cable , you only as my board port to connect it,. for you said item # 113793800015 , i suggest you ask that seller how to wiring it , We only sell protection boards, as long as there is no problem with the wiring method, the product has no quality problems. I suggest you ask a more professional friend to solve the problem for you. you can take photo , i help you ask my supplier whether can use it. so sorry again for you. best regards So buyer beware. Documentation not included. I suspect I can track down the proper wiring diagram. I saw the 12v 60 amp version controlling much larger cells. The Daly company seems to be a big producer. Lawrence Rhodes ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] 20s A123 battery pack for ebike
Seems like all you need to know is polarity. is it not marked positive and negative? On Thursday, June 25, 2020, 11:36:05 AM CDT, Lawrence Rhodes via EV wrote: Here is the response from the seller on eBay. Confuses seller with manufacturer. hi sir, you bought 20s bms , it has two cable , you only as my board port to connect it,. for you said item # 113793800015 , i suggest you ask that seller how to wiring it , We only sell protection boards, as long as there is no problem with the wiring method, the product has no quality problems. I suggest you ask a more professional friend to solve the problem for you. you can take photo , i help you ask my supplier whether can use it. so sorry again for you. best regards So buyer beware. Documentation not included. I suspect I can track down the proper wiring diagram. I saw the 12v 60 amp version controlling much larger cells. The Daly company seems to be a big producer. Lawrence Rhodes ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200625/e22dfb91/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Supercaps in EVs
A surplus house I occasionally buy from is offering these 2600 farad 2.6v "boostcaps" for $36. https://www.goldmine-elec-products.com/prodinfo.asp?number=G24932_source=Goldmine_campaign=9211b9afc8-MAY23-2014_COPY_01_medium=email_term=0_15cb8e0368-9211b9afc8-60186738 They claim they are used in "electric cars, trains, electric streetcars, satellites, truck engines, etc." and that they have a retail price of $80 each. Frankly, I've never seen a capacitor like this used in such applications. So I'm curious; has anyone else? I can imagine 6 of them being used in series to replace a 12v battery, but at over $200 that hardly seems practical. Lee Hart -- If happiness is on your mind, here's a daily list to find: - something to do - something to look forward to - someone to love - someone to take good care of - and misbehave, just a little -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Atlas 80V Electric Mower from Harbor Fright.
Hi folks Any reviews on the ATlas electric mower from harbor fright? I have a ECO 21” battery 56v mower but had to cut a hole in the top for a heat sink to protrude due to heat shut down and wire the two batteries in parallel. I also have a Yardman electric from 94’ 24V electric that still runs. I put in Dakota two 12v batteries but after 3 years the bms caught on fire so just clipped IT out and finished the lawn. Best regArds Mark Sent from my iPhone ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Electric Truck Cement Mixer
On Thu Jun 25 15:14:57 PDT 2020 ev@lists.evdl.org said: >those types of fuels as well. I would like to see one day an electric >garbage truck for metropolitan areas (short range needed) that is silent, >clean and efficient. Wouldn't it be great to see a refuse company deadening I saw one at a car show in Oregon a few years ago. Probably this one: https://arstechnica.com/cars/2019/05/seattle-makes-history-with-electric-garbage-truck/ -- Bobcats and Cougars, oh my! http://john.casadelgato.com/Pets ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Supercaps in EVs
I've seen them used mostly in buses for short term regen purposes (they can absorb lots of power very quickly from a heavy vehicle stopping, and then release it back out to accelerate back up to speedmore so than a battery pack) Jay On 6/25/20 2:10 PM, Lee Hart via EV wrote: A surplus house I occasionally buy from is offering these 2600 farad 2.6v "boostcaps" for $36. https://www.goldmine-elec-products.com/prodinfo.asp?number=G24932_source=Goldmine_campaign=9211b9afc8-MAY23-2014_COPY_01_medium=email_term=0_15cb8e0368-9211b9afc8-60186738 They claim they are used in "electric cars, trains, electric streetcars, satellites, truck engines, etc." and that they have a retail price of $80 each. Frankly, I've never seen a capacitor like this used in such applications. So I'm curious; has anyone else? I can imagine 6 of them being used in series to replace a 12v battery, but at over $200 that hardly seems practical. Lee Hart ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Electric Truck Cement Mixer
>> I would like to see one day an electric garbage truck for metropolitan areas >> (short range needed) that is silent, clean and efficient. Wouldn't it be >> great >> to see a refuse company deadening. From: John Lussmyer >I saw one at a car show in Oregon a few years ago. I saw one in the 1990's in England. *Very* quiet, even when emptying cans into the truck. Lee Hart -- Excellence does not require perfection. -- Henry James -- Lee A. Hart http://www.sunrise-ev.com ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Supercaps in EVs
Lee; Question from a novice who knows nothing about supercaps. Would these be on any use to help with battery sag when drag racing? Thanks; Dennis Sent from my iPhone > On Jun 25, 2020, at 1:08 PM, "Lee Hart via EV" wrote: > > A surplus house I occasionally buy from is offering these 2600 farad 2.6v > "boostcaps" for $36. > > https://www.goldmine-elec-products.com/prodinfo.asp?number=G24932_source=Goldmine_campaign=9211b9afc8-MAY23-2014_COPY_01_medium=email_term=0_15cb8e0368-9211b9afc8-60186738 > > They claim they are used in "electric cars, trains, electric streetcars, > satellites, truck engines, etc." and that they have a retail price of $80 > each. > > Frankly, I've never seen a capacitor like this used in such applications. So > I'm curious; has anyone else? I can imagine 6 of them being used in series to > replace a 12v battery, but at over $200 that hardly seems practical. > > Lee Hart > > -- > If happiness is on your mind, here's a daily list to find: > - something to do > - something to look forward to > - someone to love > - someone to take good care of > - and misbehave, just a little > -- > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Supercaps in EVs
Maybe Dennis B is still monitoring this forum, he and Bill Dube might be familiar with this and willing to chime in. We discussed pack stiffening years ago and frankly thought it had been done to death by now. I have a few flight packs worth of BB600s that might be very useful with a Ucap booster arrangement. Dach. "Do what you can, with what you have, where you are" - Theodore Roosevelt On Thursday, June 25, 2020, 11:22:19 AM MST, Pestka Dennis via EV wrote: Lee; Question from a novice who knows nothing about supercaps. Would these be on any use to help with battery sag when drag racing? Thanks; Dennis Sent from my iPhone > On Jun 25, 2020, at 1:08 PM, "Lee Hart via EV" wrote: > > A surplus house I occasionally buy from is offering these 2600 farad 2.6v > "boostcaps" for $36. > > https://www.goldmine-elec-products.com/prodinfo.asp?number=G24932_source=Goldmine_campaign=9211b9afc8-MAY23-2014_COPY_01_medium=email_term=0_15cb8e0368-9211b9afc8-60186738 > > They claim they are used in "electric cars, trains, electric streetcars, > satellites, truck engines, etc." and that they have a retail price of $80 > each. > > Frankly, I've never seen a capacitor like this used in such applications. So > I'm curious; has anyone else? I can imagine 6 of them being used in series to > replace a 12v battery, but at over $200 that hardly seems practical. > > Lee Hart > > -- > If happiness is on your mind, here's a daily list to find: > - something to do > - something to look forward to > - someone to love > - someone to take good care of > - and misbehave, just a little > -- > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200625/002cc0fa/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Electric Truck Cement Mixer
Liebherr, Designwerk to Unveil Electric Truck Mixer Liebherr and Designwerk have developed an emissions-free, electric mixer truck for transporting concrete. May 12, 2020 shorturl.at/hoqHU In 2016 Liebherr sold their 90,000 truck based cement mixer. They operate worldwide, so their start with this technology could be a good first step. They also work with a lot of ICE equipment so there are hints of developing those types of fuels as well. I would like to see one day an electric garbage truck for metropolitan areas (short range needed) that is silent, clean and efficient. Wouldn't it be great to see a refuse company deadening the sound from bins and trash cans because the truck is so silent. Paded pickup arms to stop the noise. Off topic, I'm getting old, etc. etc. Alan -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200625/c94e1431/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Fwd: Electric Truck Cement Mixer
Liebherr, Designwerk to Unveil Electric Truck Mixer Liebherr and Designwerk have developed an emissions-free, electric mixer truck for transporting concrete. May 12, 2020 https://bit.ly/2Vj9cD8 In 2016 Liebherr sold their 90,000 truck based cement mixer. They operate worldwide, so their start with this technology could be a good first step. They also work with a lot of ICE equipment so there are hints of developing those types of fuels as well. I would like to see one day an electric garbage truck for metropolitan areas (short range needed) that is silent, clean and efficient. Wouldn't it be great to see a refuse company deadening the sound from bins and trash cans because the truck is so silent. Paded pickup arms to stop the noise. Off topic, I'm getting old, etc. etc. Alan -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200625/e568d0e8/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Ego vs Greenworks?
I've never owned a gas mower. I used a rotary push mower for years, then a "Rally" corded electric mower. I used it with a cord for 5-6 years, then added a 120v pack of Gates lead-acid "D" cells to make it cordless, and used it another 5-6 years that way. In fact, I still have some of those Gates "D" cells that are still usable (now ~25 years old)! I then got an Electrak riding mower (actually a New Idea E-8 version), and later a GE Electrak G-10. Then I got lazy, and got a Robomower 850. It worked well for 5-6 years, but it was a pain to keep the "border fence" wire intact. Then it broke down, and the company that made it went out of business. I need to "hack" into it and figure out how to fix it. I'm currently using a Black-and-Decker 36v mower. It's cheap and has broken down several times, but so far I've been able to fix it. The charger was junk (a battery "serial killer"), so now I use a good 12v charger, and charge each of its 12 lead-acid batteries individually. The current batteries are now 6 years old and still going. Lee Hart -- If happiness is on your mind, here's a daily list to find: - something to do - something to look forward to - someone to love - someone to take good care of - and misbehave, just a little -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] 20s A123 battery pack for ebike
On 25 Jun 2020 at 16:35, Lawrence Rhodes via EV wrote: > So buyer beware. Documentation not included. Yeah, that costs extra. If you want instructions for this cheap stuff, you buy the same cheap stuff from an importer in the West. If you've chosen well, the seller will have written up reasonably clear instructions. He'll mark up the product to pay himself for his time. Wouldn't you? If you're REALLY lucky, maybe he'll even let you call or email with questions. That might cost still more, heaven forbid. Sometimes you can find somebody in a web forum who's figured one of these direct-from-the-sweatshop cheapies out. The time to look for that is BEFORE you buy. And then you may or may not be able to get the same gadget the online guy documented. Turnover of these Chinese manufacturers can be quick, and the regularly re-engineer them to make them cheaper and more profitable to build. All this messing around takes time. How much is your time worth? Did you save enough on the BMS's price to pay for that time? David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = I am the one with no secrets. They [the Chinese government] have secrets. It is only because they have secrets that they can imagine everyone else having them too. -- Ai Weiwei = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] 20s A123 battery pack for ebike
I finally counted all the pins between the two connectors. 21 small Leeds. Since it is a 20 p device I now completely understand the unit. 20 red and one black. Daly is a big company but having separate cables for the same function is confusing. Lawrence Rhodes On Thursday, June 25, 2020, 11:00:37 AM PDT, paul dove wrote: Seems like all you need to know is polarity. is it not marked positive and negative? On Thursday, June 25, 2020, 11:36:05 AM CDT, Lawrence Rhodes via EV wrote: Here is the response from the seller on eBay. Confuses seller with manufacturer. hi sir, you bought 20s bms , it has two cable , you only as my board port to connect it,. for you said item # 113793800015 , i suggest you ask that seller how to wiring it , We only sell protection boards, as long as there is no problem with the wiring method, the product has no quality problems. I suggest you ask a more professional friend to solve the problem for you. you can take photo , i help you ask my supplier whether can use it. so sorry again for you. best regards So buyer beware. Documentation not included. I suspect I can track down the proper wiring diagram. I saw the 12v 60 amp version controlling much larger cells. The Daly company seems to be a big producer. Lawrence Rhodes ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200625/411ee9e7/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Supercaps in EVs
In the early 2000s, Solectria (RIP) used supercaps experimentally as current levelers in EVs. They hoped to get more range out of lead batteries. The idea worked, to a degree, but the caps' rapid voltage fall meant they needed a DC:DC converter, and its (in)efficiency was a problem. Also, the range improvement was highly dependent on how the vehicle was driven. http://www.evdl.org/docs/supercap_leveler.pdf The report linked above doesn't discuss the system's cost, but IIRC it was pretty high for the small amount of benefit it returned. Adding another module or two to the battery would have probably accomplished more for less cost. But they couldn't have gotten a grant for that. :-) David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Q: What do you call a principal female opera singer whose high C is lower than those of other principal female opera singers? A: A deep C diva. -- Anonymous = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
