Topbatt 12V 4.0Ah Replacement Battery for Milwaukee M12 XC Cordless Tools 48-11-2440 48-11-2402 48-11-2411 2Packs Brand New| 12Volts| 4000mAh| Lihium-ion battery cell| 48Wh Replacement Battery - Compatible with Milwaukee M12 XC 48-11-2401, 48-11-2402, 48-11-2440, 48-11-2411, C12 B, C12 BX Cordless Power Tools High-tech Battery - Uses the highest quality cells, Safe with rapid-charge technology while providing overcharge and over discharge protection to increase the life of the battery Intelligent Protection System - The battery has built-in protection against potential damage caused by over-charging, over-discharging, over-voltage, over-current,short-circuit Safe & Reliable - The battery are CE-/FCC-/RoHS-/UL- Certified, tested by manufacturer to match OEM products and exported all around the world, they come with 30 days money back and 1year warranty. Any question, please contact with us at any time Always  remove battery pack form your tool when you are  assembling   parts,making adjustments,cleaning,or when not being used for  an  extended  time. If you don&#039;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. Do  not leave the battery dormant for long periods of  time. We recommend   using the battery at least once every two to three  weeks.