Battery Type: Li-ion Cell Voltage: 12V Capacity: 3500mAh Weight: 168g Factory outlet, providing the best deal and professional after-sale service FCC, CE and RoHS certified, 100% compatible with the originals and may exceed the performance of OEM products No memory effect, can be charged or discharged as needed without loss of capacity UK/EU charger Input: AC100-240V Output: 12.6V/1.5A Color: Black Replacement For: Dremel B812-01 B812-02 Fit for: Dremel 8200 8220 8300 Note: It's recommended that the battery should be fully charged and discharged 3 times after you receive the battery. After use, please charge the battery after cooling. Red: charging is running Green: charging completed, battery full Flashing red: bad connected, high temperature or reverse connect.