【SPECIALLY DESIGNED FOR X-BOX CONTROLLERS】: The Bcofo X-box rechargeable battery pack is designed for X-box Series X|S/X-box One/X-box One S /X-box One X/Elite/Core controllers. You can play and charge simultaneously when the battery is low, without worrying about running out of power. (Product includes only 2 batteries, no cables included), 【HIGH-CAPACITY BATTERY】: The voltage reaches 3.7V, provides more sufficient voltage for the motor, resulting in stronger vibrations; This C02 model battery only requires 2.5 hours to charge and can be used for 12 hours. 【LONG CYCLE LIFE OF BATTERY】: Each X-box battery pack can be used for over 3000 cycles, increasing the cycle life by over 2000 compared to regular nickel-metal hydride batteries, making it an excellent alternative to non-rechargeable AA batteries. 【SAFETY PROTECTION】: The C02 model battery has passed UL/CE/FCC certification and features overcharge, overcurrent, overheating, and short circuit protection, ensuring fast and safe charging while extending battery life. 【CHECK BATTERY STATUS THROUGH THE GAME HOMEPAGE】: After turning on the gaming console, you can check the charging status and battery level through the battery icon in the top right corner of the game homepage. Additionally, a prompt will appear on the game homepage when the battery is low, alleviating your concerns about battery anxiety.