About 10 years ago I replaced the lead acid battery
in my cherry 78 T140v due to it leaking acid and the resulting damage to the chrome on the rear fender. Like Kurt, said above, AGM is my preferred battery
so one went in at that time. Last month I noticed a single drop of acid on the floor under the bike. Inspection revealed a cracked battery
case. Possibly caused by my religious use of a battery
tender. No damage to the fender as 99% of the acid stayed in the AGM battery
. Happy days!
PS it was quite a large crack, split the outside cell top to bottom!