Agree with markopolo's suggestions. I'm not familiar with the lighting in the Agile
but I have at least one coach battery fed courtesy light in the left/driver's side outside
storage compartment, that could probably kill a battery. I have 2 Deka GR27 AGMs in my
'02 190P, and since switching to them I haven't had any issues with overnight drain, but
the older wet cells I replaced were always suspect, to say the least. Too much care and
maintenance for me. I usually leave the coach batteries enabled overnight, to run the
furnace if it comes on in the cold, the propane and CO detectors are always on, and the
water pump for toilet flushing, and whatever lights we might use, and we often watch TV
for a while before we sleep if there's any in the area, or I set up my satellite, and I haven't
drained them yet.
But I switched most of my coach lights to LEDs 2 years ago. You might want to look into
switching as many 12V DC lights over to LED comparables. I think it really helps me to save
power when on batteries. I only have one or 2 coach lights that are still incandescent, the
2 overhead cab map lights, just for the brightness, and because they don't get much use
Another thought just occurred. I know there's not much room behind the battery in the
slide out tray, or clearance above it when the thing is in the stored position. It might be
a short from an exposed cable, or some sort of contact with an exposed terminal or clamp,
or some moisture in the battery compartment causing it to short to ground overnight.
Although it wouldn't explain a battery drain necessarily, check your cables and battery clamps
for corrosion inside the connections where the wire attaches to the actual clamp. When I still
had my wet cells and had problems with them, marko suggested I look for a bad cable. As
it turned out, I did have one cable corroded inside the connection. When I pulled on the
cables to test them, I pulled one of the the wires out of the clamp. Sorta like these.
Here's a link to a Sprinter based battery drain discussion on another site which might
help or give you some ideas, too.
http://www.rv.net/forum/index.cfm/fusea ... ging/1.cfm