The JCB AA and AAA Rechargeable Batteries have capacities of 900mAh, 1200mAh, and 2400mAh, with a NiMH chemical composition. These batteries are pre-charged, have a long expiry of up to 500 cycles, and come with a 2-year manufacturer warranty. Suitable for high drain, low drain, and solar/wind devices, they are designed for various applications.