Hitech- Smart Charger with 4 AA 2500mAh*Japan Yuasa Rechargeable Batteries for Kids' Electronics Learning System 2/4 AA/AAA AC/DC smart charger with 4 AA Japan Yuasa batteries Charges 2 or 4 units of AA and AAA Ni-MH/ Ni-CD rechargeable batteries Foldable AC plug and supports worldwide voltage 100V-240V. Compact design and very light weight. Only weighs 82 gram (2.9 oz) Great for electronic kids toys & electronic learning system like Leapster Handheld and Vtech Kids Charges up to 300 times and cost saving than alkaline batteries