... current 4.2 year warranty 5.with Al alloy case, Charger&BMS 36V Li-ion battery pack used ... anti-shortcircuit, anti-overcharger, anti-overcurrent, anti-overload3.Compose Type : Injection Technology to make battery more stable4.Certifications : CE ... electric car, tourist car and commix car2. Light electric car: such as electric bicycle, golf car, small-scale electric flat car, forklift, cleanness car, ...