Battery pack specification： Nominal Capacity (AH):8ah 10ah 12.5ah 14ah 15ah 17.5ah Nominal Voltage (V): 36V 24v Cell assemble: 7*5 7*67*7 10*4 10*5Series*Paralles) Cell Model: 18650 3.7V 2000mAh 2500mahCell Cell Quantity (series*parallels): 35pcs 40pc 42pc 49pcs 50pcs Battery Size: 50*150*380mm Discharge Cutoff Voltage (V): 30±1V (21±1V) Charge Cutoff Voltage (V): 42V(29.4±1V) Rated Discharge Current (A): 10A Maximum Continuous Discharge Current (A): 15A Maximum Instantaneous Discharge Current (A): 30A Charge Mode: CC-CV Standard Charge Current (A): 2A Charge Time under Standard Charge Current: 5hours Charge Temperature Range: 0-55° Discharge Temperature Range: -20-60° Battery Net Weight (include BMS) (kg): Approx.2.9-3.4kg Charging Cycles: >700 times Recommended For Motor: 250W350W Battery pack pic vivew: Shipping method: We will ship battery packs by UPS/FEDEX/DPD/battery special-line service,other Non-battery goods will be shipped by DHL/fedex.depends on different countries. And goods will be shipped within 7days. Warnings Do not immerse the battery in water or seawater, keep the battery stands by in a cool dry surrounding. Does not use or leave the battery near a heat source as fire or heater. Do not reverse the position and negative terminals. Do not connect the battery electrodes to an electrical outlet. Do not discard the battery in fire or a heater. Do not short-circuit the battery by directly connecting the positive and negative terminals with metal objects. Do not strike, trample or throw the battery. Do not directly solder the battery and pierce the battery with a nail or other sharp objects
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