The batteries were wearing out on a previous charger so I decided to replace the whole thing since it was cheaper that just buying new rechargeable batteries. I wanted one that plugged into the wall socket so choices were limited. This unit took about 4 hours to charge the first time but the life of the charged batteries is longer than I expected. We've played 3 times at about 1 1\/2 hours each and it still shows 2 bars worth of charge left. I would have had to recharge already on the old one. I think it is a great buy and would recommend purchase. After a few charges it would already pay for itself.