liitokala 48v 20ah 30ah 40ah 50ah 25ah ebike battery for electric bike battery including 54.6v 5a charger

lithium battery features: 1.life expectancy is two times that of lead-acid batteries.the weight is more lighter 2.no memory effect and rechargeable.the battery life is more longer 3.avoiding mechanical accidents caused by vibration. 4.safer and more environmentally friendly, no heavy metals and hazardous substances. 5.built-in ic chip will prevent battery pack over charge, over discharge, over-current,over-heat,short circuit..syi