These are the PKCELL 3600mWh USB-C Rechargeable AA Batteries | 2-Pack

Power up your gear sustainably with the PKCELL 3600mWh USB-C Rechargeable AA Batteries. Engineered for modern high-drain electronics, this premium 2-pack combines the massive capacity of lithium technology with the ultimate convenience of direct USB-C charging—no bulky, dedicated charging docks required.

Key Features: 

Massive 3600mWh Power Capacity: Delivers long-lasting performance and reliable energy to keep your devices running longer between charges.

Constant 1.5V Output: Unlike traditional NiMH rechargeables that drop voltage as they drain, these lithium batteries maintain a rock-solid 1.5V output until the moment they are empty. Perfect for gaming controllers, trail cameras, microphones, and smart home devices.

Direct USB-C Charging: Equipped with a built-in USB-C port right on the battery body. Simply plug into any standard DC 5V USB input (wall adapter, power bank, or laptop) for effortless charging.

Smart LED Charging Indicator:

- Flashing Green LED: Battery is actively charging.

- Solid Green LED: Fully charged and ready to go.