I just bought three and am tossing them right in the trash. There's no indicator light. They don't even seem to work on a drained battery, the light on the battery lights up white. The batteries don't flicker when you take the charger off.
I like having a few of the teensy little vv 510 batteries to carry in my purse when I go out. I've broken and lost more than I can remember. These chargers seem like they would short the batteries out. Why bother even using them?
Right in the garbage for these.
Edited on 10/2/2015 at 4:24 PM. Reason: