BATTERY AAA-AC11

are MAXUSS AAA Rechargeable Lithium-ion (Li-ion) batteries. These are unique compared to standard rechargeable batteries because they have a built-in USB port for direct charging.
​Here is a breakdown of the key specifications and features visible on the packaging:
​Technical Specifications
​Battery Size: AAA (standard small cylindrical battery).
​Voltage: 1.5V constant output. This is a major advantage, as standard NiMH rechargeables often drop to 1.2V, which can cause some electronics to perform poorly.
​Energy Capacity: 1100mWh (milliwatt-hours).