Battery Drain - Usual Suspects

Tonijim wrote:
We have a new-to-us 2010 Four Winds Freedom Elite 31r Just replaced the two 12v coach batteries (probably OEM). The Bosch engine battery was new in 4/13. It will not hold a charge if allowed to sit 4 weeks or so with all systems shut down. It will accept a charge and run fine while on the road or on short stays.

Question - are there usual suspects in battery rundown in a shut down storage situation?

Any thoughts would be appreciated.

Jim

you could test chassis batt health by disconnecting it , measure ita voltage, trickle it to full charge (note if this appears to happen rather quickly). read around 12.8v or so, then let batt sit a day or three. if it drops below 12.6v uncabled, it may have a bad cell.

if the above occurs, your battery entangler solenoid may be root of all the battery issues you posted.