Note: The charger for lead-acid batteries cannot charge lithium batteries We provide a variety of lithium battery packs, OEM services, have any questions please contact us The battery is suitable for equipment of 250W-100W motor;Designed for electric wheelchairs, it is suitable for 80% of electric wheelchairs on the market At the same time compatible with electric bikes Rated voltage: 24VOutput Voltage: 16.5-25.2 VBattery capacity: 21AhDimensions:240*190*115mmTotal weight: 3.15kg aroundInternal protection circuit: overload, over discharge, over current, short circuit protectionBattery cells inside :18*65cells . Good quality Life Cycles :Over 1000 timesApplications:power wheelchairs, electric vehicles, model aircraft, electric tools, Battery pack diy,Golf carts, sightseeing coaches, electric Motorcycles,electric bicycles And Others .