ScrotpusGobbleBottom
Corn Pop was a bad dude.
No clue. That is between you and the BMS. from the screen shots I do not see any obvious way. Perhaps that pencil edit button does more than change the name of the battery?
Lifepo4 voltage drop recently
- Thread starter Echo Dawn
- Start date
sunshine_eggo
Happy Breffast!
A good confirmation of 100% or damn close is if all cell voltages are 3.45V or higher with little or no current charging them.
LFP can technically take 4.20V (very little gain and reduced cycle life vs 3.65V) AND the vast majority of "dumb" BMS trigger off at 3.75V. Initially, all the server rack batteries ran up to 3.9V.
While it may not be best practice, it is a very common practice, and it's not likely to influence cycle life on a low C rate application.
sunshine_eggo
Happy Breffast!
Oh geez I can’t figure out how to change that setting
It's really not that important. I wouldn't' be surprised if the app you are using is either locked down or limited since you bought the battery assembled from a supplier.
sunshine_eggo
Happy Breffast!
I wouldn't stress about it.
You might want to try the Overkillsolar app for the JBD BMS.
sunshine_eggo
Happy Breffast!
with 60A still flowing in, you're still not quite there, but you're getting close.
ScrotpusGobbleBottom
Corn Pop was a bad dude.
You got a bit to go for sure.
ScrotpusGobbleBottom
Corn Pop was a bad dude.
Yeah, the bms is lying to you and not calibrated. As others have mentioned, it should be a lot more accurate for a while after you finally charge it to 100% actual.
ScrotpusGobbleBottom
Corn Pop was a bad dude.
all good.
ScrotpusGobbleBottom
Corn Pop was a bad dude.
Did current go to zero?
sunshine_eggo
Happy Breffast!
This is noise.
keep charging. The vast majority of charging of 12V LFP occurs below 13.6-13.8V, and the curve is very flat meaning the voltage changes not at all or very little.
Try to keep mental track of how much Ah you've put in.
sunshine_eggo
Happy Breffast!
From:
diysolarforum.com
This charge was the equivalent of a 30A charge for you. Note how it stayed below 13.6V until about 95% SoC. Yours will hit it a little sooner.
LFP full charge @ 3.4V/cell
Thought I'd try a little something on a cheap 12V I've been testing... Charge to 20A @ 13.6V (3.4V/cell), 2A tail current. When testing at cell level and dealing with testers that don't have separate sense leads, lead resistance plays a big role, and I would typically observe cells get charged...
diysolarforum.com
This charge was the equivalent of a 30A charge for you. Note how it stayed below 13.6V until about 95% SoC. Yours will hit it a little sooner.
Similar threads
