AKTTKA 8 Pack AA Rechargeable Batteries 4070mWh 1.5V Lithium Battery with 1-To-4 USB-C Fast Charging Cable, Ideal for Gamepaders, Smart Locks, Wireless Mice and Keyboards, Thermometer

【Up to 35% Longer Runtime】 Each battery boasts a high capacity of 4070 mWh and higher energy density. Compared to most 1.5V rechargeable AA lithium batteries on the market, runtime is extended by up to 35%, effectively reducing charging and replacement frequency for long-term stable use 【Convenient USB Charging】 The included USB charger features a 1-to-4 charging cable design that can charge 4 AA lithium batteries simultaneously—no need to wait for individual charging. Supports fast power replenishment via laptops, car chargers, or power banks. Enjoy fast, safe, and convenient charging anytime, anywhere, whether traveling, camping, or for daily use 【1.5V Constant Voltage】 Adopts 1.5V constant voltage lithium battery technology to deliver strong and stable power throughout the entire usage cycle. Even under high load or low battery conditions, the voltage remains stable, allowing devices to operate normally until remaining power drops to 15% (with a low-battery reminder). Effectively prevents reduced device power, slow response, or unstable operation, ensuring high-power-consuming devices always perform at full speed 【Cost-Saving & Eco-Friendly】 These rechargeable AA lithium batteries support over 500 charge-discharge cycles. Each battery can replace approximately 500 disposable batteries. Compared to common disposable AA batteries, a single battery saves about £245, and 8 batteries save a total of approximately £1950. While significantly reducing long-term usage costs, it drastically decreases disposable battery waste for a greener lifestyle 【Wide Compatibility & Superior Safety】 Suitable for game controllers, smart door locks, wireless mice, keyboards, security cameras. With stable 1.5V constant voltage output, it works for voltage-sensitive devices—avoiding performance issues from 1.2V nickel-hydrogen batteries. Built with 6-layer safety protection (overcharge, over-discharge, overcurrent, short circuit, overvoltage, overheating). Note: Max discharge current 2A; not for flashlights, high-brightness torches or radios