Durable & long-lasting: The Lepro 2800 mAh power aa and aaa batteries combo pack ensures optimal efficiency and prolonged discharge NOT rechargeableThese aa aaa batteries combo pack are NOT-rechargeable. If left unused in devices for extended periods, remember to replace them with new batteries when using Safety battery: The batteries variety pack features an advanced design, providing stable 1.5 voltage output, locking in power without leakage Green considerations: Our batteries variety pack is mercury and cadmium-free throughout all stages of manufacturing Versatile use: These aaa and aa batteries combo packs are suitable for remote controls, alarm clocks, flashlights, toys, and more