I was going to buy a MAHA charger[[ASIN:B000WG9MUG PowerEx MH-C9000 WizardOne Charger-Analyzer + 4 Pack AA NiMH Rechargeable Batteries [2700mAh]]] so I could get the advantages of Pulse Charging which is suppose to be better at reviving old batteries, but have found that I don't need it.