Re: [EVDL] Bottom Balancing Batteries

2021-03-14 Thread Roger Stockton via EV
Hi Gordon, I'm still around, and still at Delta-q, which is now part of Zapi Group. The Leaf is my wife's car, but she does let me drive it from time to time. I've still got my conversion, and a lithium pack for it, but health issues in recent years are making it quite challenging to do much p

Re: [EVDL] Bottom Balancing Batteries

2021-03-14 Thread Willie via EV
On 3/13/21 11:47 PM, Gordon Wong via EV wrote: My idea was to expedite the balancing process by starting at a low SOC and let the BMS stop the charge when the lower capacity cells came up to 3.6 something or whatever the BMS was set to. That bottom balancing confused everyone. As Bill wel

Re: [EVDL] Bottom balancing batteries

2021-03-14 Thread Willie via EV
On 3/14/21 11:09 AM, paul dove wrote: No! However, if you want them all at the same exact voltage then connect them in parallel for a day. Then connect them in series and charge the pack. To get balance closer, best to equalize in parallel while on the high voltage tail. I would think some

Re: [EVDL] Bottom balancing batteries

2021-03-14 Thread paul dove via EV
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Re: [EVDL] Bottom Balancing Batteries

2021-03-14 Thread Bill Dube via EV
Gordon, We use a "CellPro" PowerLab 8 to initially balance, and cycle our LiFePO4 packs in groups of eight cells (or less.) http://www.store.revolectrix.com/Products/Cellpro-PowerLab-8-EC5-version/Cellpro-PowerLab-8_3299 About $250 and you will realize that you have been sleeping under a rock