battery8 Battery Type: Ni-MH Voltage: 12V Capacity: 3000mAh Color: Black Keep the battery healthy by fully charging then fully discharging it at least once every 2 to 3 week It's a good idea to clean dirty battery contacts with a cotton swab and alcohol We recommend using the battery at least once every two to three weeks. If you don't plan on using the Battery for a month or more, store it away from heat and metal object