my bank 4s 12v 310

[papicdu1]

hello, i need litlle help, please check my settings on screenshot and why baterry bank have litlle drop in capacity after charging with lifepo charger 10a? Baterry its new, A grade, thanks for help

 

[sunshine_eggo]

Try this:

 

[papicdu1]

ok,thans for help

 

[papicdu1]

change,

 

[papicdu1]

in settings ,80% 70% its same number?

 

[papicdu1]

and 50 and 40%? its ok? thanks

 

[papicdu1]

much better

 

[sunshine_eggo]

duplicates are okay.

 

[papicdu1]

ok,thanks for help

 

[papicdu1]

duplicates are okay.

problem, i discharge baterry with 50w car bulb and baterry drop fast to 3,40v and go to bigger problem.When discharge with bulb aplication show charge ? I check charge with charger and aplic. show discharge?What now checking?

 

[sunshine_eggo]

Drop fast to 3.40 is normal.

50W at 13.51V should be 50/13.51 = 3.7A discharge. You are showing 0.03A charge.

Wrong current may be a calibration issue where it reads current wrong. Is there a way to calibrate the current?

 

[papicdu1]

thanks for help, i dont know how change current, which parameters?
I check cell ,one by one and voltage diferrent its minimal ,0,02-,0,04, calibrate in aplication but something show strange when discharge baterry,aplication show charging?? 0,4w

 

[papicdu1]

sorry, on first screenshot show charge 0,03 a ,but charger its disconnect,only bulb its connected

 

[papicdu1]

where measuring this current?Aplication show amper when connect led bulb 50w
In this screenshot change voltage , but current?

 

[MisterSandals]

I hate to ask…I cannot imagine this working at all.

Is it possible the BMS is wired backwards?
Is the BMS B- wire connected to battery -?

 

[papicdu1]

hello,yes wired its ok connected

 

[papicdu1]

i check again, same case, drain baterry with 50w, aplication show litlle charge?

 

[sunshine_eggo]

Disconnect all loads and charge.

Enter calibration:



Select current and "SET IDLE CURRENT TO ZERO":

 

[papicdu1]

i check with your help, works better, but when connect light bulb, discharge measuring dont work?

 

[papicdu1]

as if the function has been replaced, I connect the bulb and it shows charging