I think if you have a 12v charger with the 2 volt trickle setting you can use that with constant monitoring of the state of charge, but you really need an 8v charger to do it properly

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 & Rust-a-holics Unanimous parking lot