DIY Electric Car Forums banner

LiFePo4 pack balance data from non-BMS Users

5404 17
I am trying to find real world pack balance data from LFP users with no BMS. I want to see how the pack stays in balance over time. There probably isn't much out there, but anything is better than nothing at this point.

Do you have an LFP pack with no BMS?

Do you have any data from the history of your cells, particularly how well they stay in balance?

Did you initially balance them?

Top or Bottom balance?

What discharge rate are you typically drawing from your pack?

Do you balance your pack every so often to bring them back in line?

Do you use cellogs or other device to log all or some of the cells?

Would you share this data via a link or email?

1 - 3 of 3 Posts

· Registered
4,334 Posts
I consider a 0.01V difference big, and usually re-balance the cell at that point.
measured when? right after end of charge, or 'at rest'?

I am not sure I would consider .01 v within my multimeter accuracy. ;) I think its rated at +/- 3%... but I dunno if that is absolute accuracy, or the repeatability.

I was thinking that balancing wouldn't really be required unless voltage differences were maybe .02 or more just after end of charge, when differences would be magnified as some might start climbing the voltage knee while others not.
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.