The concrete deal is nonsense. What CAN help discharge a battery is storing them in a warm place with dirty crud on the top. The crud and become conductive, and drain the battery. The warm environment allows chemical action to "self discharge."
Even though batteries don't output as much power when cold, the best way to STORE them is to charge them up and store them cold. Keeping dry cells in the fridge is no myth.
I would guess that if you have a few batteries over 5 years old, most of them are "about gone." I sure would not put much energy into trying to keep them up.
They should really not be charged or stored in a basement, but rather a ventilated ground level shed. Batteries DO occasionally explode without much apparrent reason. Not pretty in your basement.
Even though batteries don't output as much power when cold, the best way to STORE them is to charge them up and store them cold. Keeping dry cells in the fridge is no myth.
I would guess that if you have a few batteries over 5 years old, most of them are "about gone." I sure would not put much energy into trying to keep them up.
They should really not be charged or stored in a basement, but rather a ventilated ground level shed. Batteries DO occasionally explode without much apparrent reason. Not pretty in your basement.
