NiCad Batteries

Nickle cad and hydride batteries can use the same charger. The radio shack sells a charger for both for about 15 bucks.

The hydride will last about 4 or 5 times as long as a nickle and doesn't poison the ecosystem The hydride has no memory effect. Never fully discharge a rechargeable battery as some cells will be charged in the wrong direction when one cell goes dead before the others. Be careful how you dispose of nickle cad, they are illegal in most dumps

The camera will not know the difference but the hydride 6 volter will have a little more voltage.