I have a plastic tray in my compartment that holds 2 batteries, and is deep enough (2") to catch most spills. Slides in and out and makes battery handling easy.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.