FLAGPOWER 14.4V 3000mAh Replacement NI-MH Power Tool Battery For Ryobi 1400671 4400011 130111073 130224010 130224011 130224017 130240010 130245005 130281002 B-1415-S B-1442T 100% Compatible with original manufacturer equipments and chargers, batteries are made with the highest quality materials Each battery has been tested by OQC to match OEM products, fully compatible. Integrated microchip prevents overcharging & lengthens battery life Keep the Ryobi Power Tool Battery Clean - It's a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device Prevent the Memory Effect - Keep the battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect Battery Storage - If you don't plan on using the Power Tool Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use