... more powerful,rechargeable batteryhigh discharge current,1C continuous,3C pulse for normal cells and 20 C for special designwe ... impact or stress.Attention itemsu Far away from heat, water and fire.u Don’t disassemble, reassemble, dissection ... u Don’t put the charger and battery in water or wet place.u Don’t cast charger ... months the battery should be charged two hours. High quality 48v UPS battery pack