Unsolved
1 Rookie
•
1 Message
1
2293
March 22nd, 2023 03:00
Battery pack BMS reset after cell replacement
Hello Folks,
I've replaced the cells in the battery pack of my Latitude E5540 with brand-new high-quality Samsung cells.
However, the self-health-check reportes that the battery is degraded and has to be replaced. The laptop does not even start without the charger plugged in. I know for a matter of fact, that these cells are in excellent condition and properly wired.
How can I reset the BMS to get this thing working again? The usual trick did not work.
Best
No Events found!
ejn63
12 Elder
•
31K Posts
•
153.6K Points
0
March 22nd, 2023 04:00
You'd need to replace the control board inside the battery. Since there are safety issues as well, it is far safer to simply replace the battery pack.