TECHNICAL PARAMETER: This battery has 48V 10AH voltage, 3 hours charge time with AVANTREK charger, up to 50 miles long-range, and 1000+ cycle lifetimes.6 SAFETY FEATURES: Smart BMS system prevents overcharging, over-discharging, overcurrent, short circuit and provides temperature protection. After 500 cycles, the capacity is higher than 80% of the first discharge capacity.SAFETY DESIGN: Switch Lock, prevents the battery from being stolen. Embedded battery design isolates all external pollution and charging is safer.