Eallpha 2-Pack Rechargeable Controller Batteries, 4800mWh High Capacity Within 3 Hour Fast Charging. Compatible with Xbox Series X|S/Xbox One/Xbox One S/Xbox One X/Xbox One Elite Wireless Controller

[High Usable Capacity]: Two-Set Game Controller Rechargeable lithium batteries with 4800mWh real usable energy. Provide super powerful and stable power for XBOX Game controller series with Max 40 hours. Make your game excited all the way.
[Easy your game with light weight] This kind battery inherits features of lithium with high capacity but much lighter compared to other OEM battery. Easy your hand and enjoy your game perfectly. Large range of output voltage make your game more realistic.
[Ultra Fast Charge]: 3 hours Fully charged and powerful again. No special charger needed. Any device with USB output charges the battery set anytime. Bulit-in smart chip guarrantees never overcharge and overdischarge. Always Safety first. Red Indicator flash=Charging; Green Indicator ON= Full;
[Always Safety First] Built-in MCU chips avoid any overcharging, overdishcharge, overcurrent, short and overheat etc. Reasonable structure makes your play excited and safe. Offer variant voltage output for low capacity reminder and longer working hour.
[Long Lifespan without Pollution]: 1200+ full complete cycles and environment friendly. Each single battery adopts high quality lithium cell and smart MCU chip. No pollution to the environment. Never overcharge, overdischarge, overcurrent, short and overheat etc.