Thread: Battery chainsaws

Originally Posted by No.3

Could possibly be a crook protection circuit in a battery pack - I have one here that the cells all check out when individually tested and everything works right but with a bit of load on it the thing shuts of and the tool stops. Plug it into charge, and the charger says fully charged. Seems to work OK on light drains like a torch or a drill using a small drill, but on grinders or circ or recipro saws it shuts off virtually straight away.

Thanks, good info! So is it possible to test the batteries to diagnose, or do I need to try the saw with different batteries?

Originally Posted by mopheadrob

Thanks, good info! So is it possible to test the batteries to diagnose, or do I need to try the saw with different batteries?

Easiest way is try another battery thats known good, and see if that fixes the problem. If that isn't the solution, it is most likely the tool is the issue and in that case it could be a case of stripping the thing down and cleaning everything up. If it's the brush-contacts version, they might be not playing the game and I think this is relatively common in the scheme of things. If it's a brushless one, the simple fixes and most usual causes of problems aren't in the picture!