The Rayovac Recharge 4 Position Value Charger will recharge any brand AA or AAA NiMH or NiCD battery. This charger has a safety auto shut off feature which protects batteries from being overcharged. Two Rayovac Recharge AA and two AAA Low Self Discharge NiMH batteries are included! These batteries can be recharged 500 times providing long-lasting performance over and over again. Rayovac Recharge batteries hold their charge for up to 1 year when not in use. One year limited manufacturer's warranty. Rayovac is a trusted brand of Spectrum Brands Holdings, Inc., a top manufacturer of consumer batteries in the United States and Latin America. Spectrum Brands Holdings, Inc. is a global consumer products company and a leading supplier of batteries, shaving and grooming products, personal care products, small household appliances, specialty pet supplies, lawn & garden and home pest control products, personal insect repellents and portable lighting.