Some more details about the Zen Photon model specifications.
Motor
Zen Custom 52V, 500W, 120Nm torque, 32 km/hr (Canada), 45 km/hr (USA)
5-levels of pedal assist + throttle
Battery & charger
52V, 20Ah (~1000 Whr)
BMS tested to UL standard
52V, 4A, UL-certified charger
Transmission...