userofnames
Newly Enlightened
I recently bought an Xtar WP2II charger and two Enerpower 18650 3400mAh (Panasonic NCR18650B) batteries. The first time I charged them everything went fine. It took a few hours, but eventually the indicator light on the charger changed from red to green, indicating that the batteries were fully charged. I have used them a few times in my Fenix TK15 S2. After charging one of the batteries for a few hours, I got curious about why the light didn't turn green, so I took it out, the light changed to green (indicating standby), and then I put it back in and the light stayed green, indicating that the battery was fully charged. I have tried a few times, and this seems to happen every time with both batteries. I am worried that the charger is not properly detecting that the batteries are fully charged and is attempting to overcharge the batteries (although they do have protection circuits). The batteries do not get hot, the charger just gets slightly warm. Unfortunately, I do not have a multimeter yet, but I will be buying one soon. What might be the cause of this odd behavior? Is it possible that my charger, or my batteries, is defective? Please advise.