【4070mWh AA + 1100mWh AAA High Capacity — Longer Runtime, Fewer Recharges】More energy means fewer interruptions. AKTTKA delivers 4070mWh per AA battery and 1100mWh per AAA battery using high-density lithium technology. Enjoy reliable power for game controllers, smart locks, remote controls, thermometers, flashlights, toys, and other compatible devices. Spend less time recharging batteries and more time using your electronics. 【Direct USB-C Charging — No Separate Charging Dock Required】Each AKTTKA rechargeable AA and AAA battery has a built-in a convenient USB-C port, letting you recharge from a compatible 5V wall adapter, laptop, power bank, or car USB port without a separate charging dock. The included 1-to-4 cable charges up to four batteries at once and supports mixed AA and AAA sizes, so one cable handles both sizes. The LED flashes green while charging and remains solid green when fully charged, so you know when each battery is ready. 【1.5V Constant Output — Helps Reduce Low-Battery Warnings】Unlike traditional NiMH rechargeable batteries that deliver only 1.2V and may trigger early low-battery warnings in some devices, AKTTKA lithium AA and AAA batteries maintain a stable 1.5V output during use. This helps keep game controllers responsive, smart locks reliable, remote controls working smoothly, and wireless devices performing as designed. 【1200+ Charge Cycles, Replaces Hundreds of Disposable Batteries】Each AKTTKA rechargeable lithium-ion battery supports over 1,000 full charge cycles, lasting approximately 2 to 3 years with regular use. This 8-pack includes 4 x AA and 4 x AAA rechargeable batteries. By replacing disposable alkaline batteries, this pack keeps up to 4,000 single-use batteries out of landfills over its lifespan, lowering long-term battery costs (Save $200+) and reducing environmental waste for households using Xbox/VR controllers, smart door locks, flashlights, doorbells, remotes, toys, blood pressure monitors, wireless mice, keyboards and more. 【One Combo Pack — AA and AAA Power for Your Entire Home】Simplify your battery setup with one rechargeable AA and AAA combo pack. This 8-pack includes 4 AA batteries and 4 AAA batteries, giving you the right battery size for game controllers, smart locks, wireless mice, keyboards, remote controls, clocks, toys, and other everyday electronics. Keep one rechargeable solution ready for the most common AA and AAA devices throughout your home. "AKTTKA Rechargeable AA AAA Lithium Batteries Power your everyday devices with AKTTKA rechargeable AA and AAA lithium batteries designed for consistent performance, convenient charging, and long-term savings. Unlike traditional NiMH rechargeable batteries that deliver only 1.2V, AKTTKA provides a true constant 1.5V output, helping compatible devices maintain reliable performance without weak power or false low-battery warnings. This combo pack includes 4 AA batteries (4070mWh each) and 4 AAA batteries (1100mWh each), providing the right battery size for everyday electronics including game controllers, smart locks, remote controls, wireless keyboards, mice, clocks, toys, thermometers, and more. Each battery features convenient USB-C charging, allowing you to recharge directly from common USB power sources including wall adapters, laptops, power banks, and car chargers. The included 1-to-4 USB-C cable charges multiple batteries at once without the need for bulky charging docks. With 500+ recharge cycles, AKTTKA helps reduce disposable battery purchases while providing dependable power for years of everyday use. Upgrade your battery experience with one rechargeable AA and AAA lithium solution built for modern homes."