How fast is 3000W 72V 20Ah?
W eBike Conversion Kit with 72V 20Ah Battery This professional-grade system delivers exceptional speeds of 50-60 mph and a range of 30-60 miles, giving you an affordable alternative to purchasing a factory-built electric bike. The battery is the energy source that powers an electric bicycle and is typically the most expensive part of an ebike system. In the early days of ebikes most batteries were lead acid, Nickel Cadmium, or NiMH, but modern ebike batteries are almost exclusively lithium-ion.