Fast-charging high-performance NiMH batteries suitable for various applications, including high current use such as cordless phones, radios, GPS receivers, flash units, remote controls, and clocks. These powerful, rechargeable cylindrical batteries with 1.2 V are designed for resource-saving use. Normal charging takes 16 hours at a maximum of 250 mA, while fast charging takes 144 minutes at a maximum of 1250 mA, utilizing minus delta U charge monitoring. These rechargeable batteries have been specifically designed to maintain their charge capacity over long storage periods. With a very low self-discharge rate, they are ready for use for weeks. Nickel-metal hydride batteries have been extensively tested for charge/discharge cycles, high current, short circuit, lifespan, and size.