Battery will reach top performance after 3-5 time fully charge cycle. About this item Rechargeable Batteries with Charger: Pack of 16 AA Ni-MH rechargeable batteries 1.2 Volt 2800mAh, rechargeable batteries with AA/AAA Ni-MH/Ni-Cd battery charger EBL aa batteries with1200 Tech, ProCyco (Professional recycle) helps maximize its best power performance while charging [High Capacity] EBL 2800mAh Ni-MH AA rechargeable battery will provide strong power for your devices to performance well and operate longer. Buy EBL AA Rechargeable Batteries 2800mAh, 8 Counts High Performance 1200 Cycle Ni Mh Batteries AA Rechargeable Batteries EBL 2800mAh Rechargeable Battery AA 8 Pack, High Capacity 1.2V NIMH AA High Capacity Rechargeable AA [Tips] Please charge fully before use, as we only charge the battery to 20% for shipping safety purpose. The Best Rechargeable AA Batteries of 2023 - Reviews & Buyer's Guide [Safety and Reliability] Rechargeable Ni-MH AA batteries, without containing harmful material such as Hg/Cd/Pb, friendly to the environment. [1200 Cycle] EBL add mix-protection additive to the cathode of batteries, protect the material from degradation in the progress of charge and discharge, extend lifespan up to 1200 cycles.