Tenergy Ultra high capacity NIMH 13,000mAh. (13 Ah) NiMH F size battery. Also referred to as Long D size. The highest Capacity NiMH single cell offered NIMH Batteries offers free memory operation and you can charge batteries at any status of charger. Idealfor power intensive deviceslike E-bike, Radios, Boom Boxes, Remote Control Cars, and much more.Perfect for portable or emergency power source for Medical applications, transportation, communication and power tools.Manufactured under ISO9001 and tested based on International Electronic Commission (IEC) standard to ensure capacity, quality and life time Can be recharge up to 1000 times at standard charging and discharging conditions.F size battery with tab is available as optional.Technical Specifications NIMH 1.2 V working voltage.Standard discharging rate (1C)13Amp ( Recommended and warranted)Discharging:- Highest Discharging rate for continuous running40Amp – Max. Dischargingrate for short time60Amp Charging:- Rapid Chargingat 1 C (13A current) rate with auto cut off device-Standard Chargingat 1.2 A current for 12 Hrs Dimension33 mm Diameter. x 91 mm Height (1.3″ Dx 3.5″ H )Weight246 gTechnical Datasheet(PDF file) Caution for Applications These batteries are intended for use by battery professionals Wedon’t provide any warranty for customers who use these F batteries above and beyond standard discharging rate of 13Amps.Please contact us at firstname.lastname@example.org if you need to use these batteries for discharge greater than 13A. Our engineering team can provide technical support.