Insten 2X 1800mAh Replacement Battery Compatible With PS3 Slim Remote Controller Valued combo includes: 2 x battery. Never run out of battery power when you are about to score the winning point. Save money and protect the environment by using the rechargeable battery. Best replacement battery for your PS3 controllers. Battery needs to be fully charged before first use. Output: 4.2V / 0.4A. Accessory ONLY, Sony Playstation 3 and controllers are not included. NOTE: If you are not comfortable to install the battery, please check with professional stores; We are not responsible for any damage due to improper installation.