Took the battery off of the charger and it was dead, will not charge, only charged a few times
Mike, Would need a bit more detail to give the best answer, but here are some general tips to point you in the right direction. Need to know if you get any LEDs on the charger or batteries, do you have other batteries you can use to test the charger/tool to isolate the problem (even the old NiCads)? Does this problem occur with one or both new batteries? Anyway, read below for some suggestions:
Lithium Ion batteries do not like to be fully discharged even if they are new. If you ran a tool until the battery fails, two problems can occur. 1. The circuitry in the charger and the battery itself senses a fault due to "too low" voltage in the cells, and prevents charging as a protection measure (prevents overheating a shorted cell). 2. You damaged the cell(s) inside the battery either due to sulfate build up or heat. If your Ryobi charger is flashing a red LED (no green) indicating battery fault,
I have found that removing the battery and reinserting it multiple times can help as the charger does a diagnostic when you first insert the battery. This test likely applies a small charge to the cells and analyzes the response, if you do the test enough, it can bring the cells back up to a sufficient level to allow the charger to accept it.
If the battery charger cycles normally but displays a full charge very quickly, the battery may be defective and not pulling any current from the charger, so the charger thinks it's fully charged.
If the battery charger does not sense the battery at all (no LED display) then the problem could be a defective charger, defective (open) battery or corroded/dirty connections (make sure no paint or dirt got into the charger port and no rust on the contacts).
Aug 29, 2012 |
Ryobi Two 18V Lithium-Ion Batteries +...