I leave the batteries in my toys, and I put the tender on every few weeks.
I've tried taking the battery out and bringing it in the house....it doesn't seem to make any differnce either way. In the past I never used a tender, but I usually had to charge them up when removing from storage, so now I keep 'em fully charged.
edit; Oh, and as long as the battery has a charge, you can set/store it on any surface material you want. Modern batteries don't care.
Meanwhile, somewhere in Michigan...
Last edited by gat803; 11-25-2012 at 08:20 PM.