> I've got 80AH, but the CO2 & gas sensors, 
> plus the radio memory draw about 50mA. I
> put the battery on a Battery Tender
> (http://www.batterytender.com/Automotive/Battery-Tender-Junior-12V-0-75A.html)
> after about a week. I wired in a connector to make it easy.

We have a closeout on a similar battery maintainer for just $16.95.  Only 3 left. 

http://www.busdepot.com/j16958

Ron Salmon
The Bus Depot, Inc.
www.busdepot.com