JamesRich
New Member
This is the bms i got that fixed my M12 battery. The bms should show each cells voltage through the terminal tabs on top like 400bird's photo above. Mine only showed voltage across the two main terminals. I had used this battery infrequently at home on a hackzall to cut branches before it went bad. It's in my service truck now on rotation and is still holding up.
I used the M18 battery i was having problems with yesterday to build a project and its working great again. I kept swapping it from tool to tool to run it down. Had to finish it off on a vacuum just leaving it run. This forum has taught me a lot about batteries and saved me quite a bit of money just on these two batteries!
James
