These 2-pack AAA USB-C rechargeable batteries (often Lithium-ion 1.5V) allow direct charging via USB-C cables, eliminating the need for a separate charger. Typically offering 500-1200 mWh capacity, they feature 2-hour fast charging, LED indicators, and over 500-1000 recharge cycles, making them ideal for high-drain devices like remotes, toys, and mice