aventon spare battery pack 18650 li-ion 48v 14ah 672wh for 500w 750w level bike with charger

voltage: 48v; capacity:14ah ; compitable motor power: 48v 250w-750w; net weight: approx 3.6kg; color: black; charge port: dc 5.5*2.1; continuous working current: 25a; peak woking current: 80a warranty:1 year; cell: 18650 3.6v 3500mah; assembling type: 13s4p cycle life: more than 800 times; power connector: anderson,xt-60,xt-90, or as customer's requests; if shelve a long time suggested that the battery voltage 48-49v, need for regular recharging (even if not use), must charge and discharge for three months one time.syi