Get a slow charge charger, exp: I had a d3100 that rested at 11.3
I used my battery tender jr on it for 1 week non stop.
It now rest around 12.7 ish and runs good.
So just give it a slow trickle charge.
But i did have 2 d3400's go bad on me.
Bro he has been on youtube for a whilee
I always see his videos lol
He looks to be around my age n bro he puts in work
respect to that.
Tell him to keep up with the good videos!!?
Don't worry about it man, just put the claim and eBay wil take care of it.
Btw eBay makes the seller pay the return shipping if not his account get disabled for a while.But you still get a prepaid label you print out.
I have the intellicharger, it works fine on my batts.
I have 2 xp300,1 d3100, and 2 d680 and it charges them real good, i leave them charging over night and there fully charge.
I have it bolted down in my silverado btw
Gives my system a nice look