This high-capacity set includes eight 1.5V 3600mWh rechargeable lithium AA batteries and an 8-in-1 charging case, delivering long-lasting power for high-drain devices like Xbox controllers, Blink cameras, and smart home electronics. The case doubles as a storage box and fully charges all batteries in just 3 hours, featuring a smart LED display to track charging status. Built for maximum durability, the batteries support 2500+ charge cycles and utilize 0V activation technology to revive depleted cells. Backed by built-in multi-layer protection and global safety certifications (UL, FCC, CE, etc.), it ensures reliable, stable, and safe performance for all your daily needs.