House battery problem - is it me or Interstate?

It's all a learning process...
No need for finger-pointing IMHO
When someone is unskilled with battery management it costs them lots of money and frustrarion which is one heck of a hard rap on the knuckles with the proverbial birch pointer.

Einstein was quoted as saying "Insanity can be defined by performing the same errors over-and-over and expecting different results".

Myself, I see a whole lot of learning going on here. Makes me smile :)