Too many Kubotas
Veteran Member
Did you by any chance get them from Amazon?Last week i bought two NOCO Genius1 chargers/maintainers.
I put them on two different batteries, one is 800CCA marine and another is a small 230CCA ZT.
The question is, is it a normal behavior?
If so you could've ended up with one that I returned after it killed a previously perfectly good H7 AGM battery.
Like you, I started with it fully charged, but after a couple of days that battery was down to 7 or 8 volts, and could not be saved.