Repair.EGO BA2242T 4AH 2022 Another Low Cell Group
Вставка
- Опубліковано 28 жов 2023
- This is the first of a few of these EGO 4AH segmented fuel gauge batteries that I got from ebay to attempt repairs. This one was a scucess but I have some more with more issues.
- Наука та технологія
I have a 2.5 AH Gen 1 that failed with the flashing green light. Replaced the shorted Q12 transistor and that corrected that issue. I was able to charge and use the battery again. However, within a week, it was now flashing red. Opened it up and this time, only one cell was significantly depleted (0.9V YIKES). Followed this excellent video and charged it up with a power supply to match the rest. Let it sit unplugged from the BMS for 24 hours and that cell held the charge perfectly within 0.01V. Plugged in the BMS, drained the battery with the leaf blower. That cell drained in proportion with the rest of the cells. Charged the pack on the Ego charger, and it charged in proportion with the rest of the cells. So I don't think there was any significant cell damage. Luckily it wasn't depleted too long.
So now, if the BMS is unplugged, it holds a charge just fine. but if the BMS is connected, it slowly drains that one cell. (about 0.2 V over a 24 hour period). Any known other failed BMS components that can cause this? Thanks
Great work!
I have 5 ego 56v batteries that have a dead T1 coil (6 pin silver cube) on the BMS board. Do you know how to repair that or what part number is needed?
Thanks.
I wish I did. I have two boards with that same transformer blown.
What is that box you have that connects to the main terminals?
It is an EGO POWER ADAPTER. Similar to this one . a.co/d/aZDIzsq
I've done this also but found eventually the same low cell bank goes low again and battery goes out of balance again. I think a cell is actually damaged and drops voltage over time. Is this your experience?