[ohiocowboy1277]

its a myth it has no effect on them what so ever . If you want to get the most life out of them put it on a battery maintainer so it stays fully charged sitting is the worst thing for a battery as they need the charging and discharging cycle that they go through when in use . without it sulfer builds up on the plates and blocks the contact of the acid when that happens it looses some of its power and eventually fails to take a charge at all