Follow this tutorial how to update FCC. 

https://www.laptopu.ro/community/how-to-reset-and-repair-laptop-battery-tutorial/fcc-65514mah-on-dell-j1knd-chip-sn8030/  

@djibattworkshop  I don't see it as the instructions.. can you guide me more

FCC = 2083mAh 

2083 (Dec) = 0823 (Hex) 

- Press Cntrl-F 

- Enter "0823" 

- Press Enter 

- profit 

Then change it to 3400 or what you want, save and write it back to the chip. 

 3400 (Dec) = 0d48 (Hex) 

Posted by: @djibattworkshop

Then change it to 3400 or what you want, save and write it back to the chip. 

 3400 (Dec) = 0d48 (Hex) 

 

That's so great. i did it thank you

i still have 1 more problem that the battery is charging very slow on my laptop.. i tried the battery on 2 different computers and still no change

but when charging with NLBA, it charges quite fast

i think the problem is with the battery but don't know where to start can you give me a little hint

Posted by: @suapinlaptopdangkhoi

Besides, I noticed that the charging current is only 612mA, I think this is the cause of the device only charging 0.44A when charging.

 Yes, it is initial reason why device charged slowly 

 Paste updated snapshot to check if Charge Current was updated after FCC change. 

Posted by: @suapinlaptopdangkhoi

but when charging with NLBA, it charges quite fast

 Also paste a picture from Charge Tab to show battery is charging fast by device. 

hello.. the customer needed it urgently, so he brought the battery back to use

I'll get back to the topic as soon as I can borrow the battery again