The AccuManager 20 is the highest quality battery charger on the market. Charges all battery types: NiMh, NiCd and rechargeable alkaline. Charger automatically recognizes battery type and different types can be charged at the same time. Charges all common sizes: AAA, AA, C, D & 9V. Max. 4 AAA, AA, C or D and 2 - 9V. Micro-controllers ensure each battery is charged optimally and individually. All charging channels feature over-voltage and reverse polarity protection, defective battery recognition and automatic float charging. Includes AC adapter and 12V car cord for car, 12v battery and solar charging. Use 20W solar panel for maximum power to charger. Made and designed in Germany. 3 year limited warranty.