This powerful 3.7V 1550mAh Li-ion battery can be fully charged in 265 minutes. It is perfect as a second or spare battery, e.g. for emergencies or outdoor activities. Ensure your Ledlenser head torch is always ready for use with this genuine Ledlenser rechargeable battery. Compatible with MH7 and MH8 head torches. Battery Type: Li-ion Rechargeable. Capacity: 1550mAh. Voltage: 3.7V. Colour Family: Green. MPN: 500987.