Vibrations.....

Bike has an AGM battery. It is retained by a large rubber band type of strap. When it is running the battery is moving around quite a bit. Recently had the + terminal meet the oil tank....and toast the battery. I am thinking of getting a rubber pad to put under the battery and fabricate a simple metal strap type of restraint system. Will basically just had some 1/4" all thread with a nut above and below the "battery tray". Will have a simple 1/4 strap across the top of the battery retained by nuts on the all thread. Wondering if mounting the battery more solidly is going to shake it to death. Sure, it will not be jiggling around but will being solidly mounted onto the bike be better than jiggling around? Make any sense?