hi guys
this board dont charge battery whan its off or sleep
but charge when its on

when its off and plug battery,use about 3A just for a moment,then reduce to 0.03 and it repeat again and again
cherge led is blue

board turn on with battery and stay on

it isnt battery problem,i change 3 battery in less than a month
they work 2-3 day and then this happened to batteries

what i should do?

Check the resistor R291 and R302 then we will see.

they are true

it charge battery when laptop is on and plug the buttery

problem is when its off and plug the battery
it start to charging for a sec,but stop it

i reprogram bios and replace charge ic and kbc but no change

when i limit current on 1-1.5A it dont stop charging
voltage reduce to 18-18.4V and buttery charge with 11.26V

when its connected with 19V and i plug buttery,it charge with 11.60V and 2.55A for just a moment

any idea?

its blowing my mind