52V 19.2Ah Rear-Rack Battery Specifications: Cell Model MH13200 Cell Voltage & Ah 3.7V 3200mah Number of cells 84 Series & Parallels 14S6P Nominal Voltage 52V Internal Impedance 150mΩ Max Charge Voltage 58.8V Max Charge Current 5A Min Discharge Voltage 42V Rated Discharge Current 40A Max Discharge Current 50A Overcurrent Protection 50A Charging Mode CC/CV Charge Temperature 0-45℃ Discharge Temperature -20-55℃ Recommended Motor Watt Up to 1500W Product Weight 12lbs 3oz Product Dimension 15 x 7 x 4 All the batteries sold on ebikeling.com come with a charger. Rear rack batteries comes with a rack. TIPS: The LED light on the charger remains RED while charging and turns green when the battery is fully charged or disconnected. A fully depleted lithium-ion ebike battery may take around 6 hours to recharge. It will take less if the battery has a partial charge when you start charging it. Do not leave the battery on the charger for long periods like several days or more. Do not store an empty battery in case you need to store it for some reason. Store it 50-70 percent charged. Charge your ebike battery regularly. You do not have to let the battery discharge completely.