Solar charger but still dead batteries

elhajj33 wrote:
A few weeks ago my coach's batteries (coach is a 2009 fleetwood excursion 40x DP) were dead when I went to pull it out of storage . Completely dead - even the aux start would not work. Couldn't even get the genie going until we put a charger on it.

I figured maybe i had left the inverter on (possible i guess...). Anyhow got it charged, running, and plugged in for a few days.

It sat in storage again for a week and this morning, it would not start again. It wasn't completely drained, but it still wouldn't start without running genie (luckily i was able to get that started).

I made sure I had nothing on at all before i put it into storage last week and I can't make sense of what's going on.

The batteries are new (or so says the dealership where i bought the coach from; will need to double check), coach does have a solar panel, and the batteries are not turned off.

Any thoughts on this. I'm not sure what could be causing the drain.

I see an anomaly in the bold underline in the quote above. Please define which batteries you are referring to. Is it the chassis (engine starter) or the house (coach) batteries? Both? Everyone seems to be replying as if it is the house batts.

The chassis and house 12v systems do crossover at various points but are not directly connected (unless the engine and alternator is in use).

If the Gennie is starting, the house batteries are holding some charge.

Solar may be to house batts and not affect the engine batt or vice versa