old_rider wrote on 04/30/15 at 19:24:01:Um, I have a battery from my ninja...that has 1.7 volts showing.... even the tender jr. won't charge it...
So don't feel bad
Unfortunately - the new smart chargers and maintainers won't charge a battery that is dead (or nearly dead). Whatever it is they use to determine the battery is fully charged....is the same signal that a nearly dead battery sends to them - so they turn off.
If you have a good battery that is just run down on power - you need to charge it with a good old fashioned "manual" charger. One that does not have the fancy testers and just keeps charging until you unplug it.