I have a volt and it has been working well up until recently. When I put a dead battery on the charger the ash cap just blinks like it's telling me it's a dead battery. So I put on a battery that still had a charge on it and it didn't even recognize the charger. Though I find it highly unlikely both batteries would quit charging both at the same time I'm still unsure what is the culprit. Has anyone else experienced and was it the charger or the batteries?