Wzygdzsw 2×6660mWh Rechargeable Battery Pack for Xbox Series X/S & One/One S/One X/Elite Controllers, Overcharge/Short-Circuit Protection | Play & Charge Simultaneously, FCC/CE Certified

【Smart Fast Charging & Extended Endurance】: Equipped with a 6660mWh high-density lithium battery, achieving a full charge in just 2.5 hours and delivering up to 15 hours* of continuous power. The patented circuit design supports simultaneous play-and-charge functionality, maintaining stable voltage output even during high-intensity vibration scenarios, eliminating anxiety about mid-game power loss. 【Full Xbox Ecosystem Compatibility】: Deeply optimized for the Xbox ecosystem, seamlessly compatible with multiple generations of controllers including Series X|S, One series, Elite, Core, and more. ♻️【Battery Longevity】: Leveraging automotive-grade cell technology, it withstands over 3,000 full charge-discharge cycles (3x the lifespan of standard Ni-MH batteries*). With 10 hours of daily gaming, it lasts over 4 years, saving 600+ disposable battery packs in its lifetime. ️【Six-Layer Safety Protection System】: Certified by UL/CE/FCC/RoHS international standards. Innovatively integrates overcharge/overcurrent/overheat/short-circuit/surge/battery-balancing protection modules. The V0 flame-retardant ensures 20,000 hours of safe fast-charging. ☑️【CUSTOMER SUPPORT】: If you have any questions that need to be resolved after purchase, please email us. We will get back to you within 24 hours.