yes they can - batteries 'self discharge' untended over time, and any battery that's allowed to discharge too deep will never hold a charge well again - might be able to charge it, but don't depend on it in a pinch ohwell

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics