Powerextra 9.6 volt 4000mAh Ni-MH Hi-quality Battery for Bosch 33000VSRK 100 3100K 3105 3105K 3109K 3110 3110K 3110VSRK 3220 B2100 B2109 B2109K B2110 B2220 Battery Type:Ni-MH / Voltage:9.6V / Capacity:4000mAh Charging at any time will have no effect on the battery Powerextra products are CE certified, tested by manufacturer to match OEM products 1 pair of gloves contained to prevent your hands from dirty 30 Days money-back guarantee and 1 Year Limited Warranty