The ECOTRIC new city travel electric mountain and city bike has a great list of features including a 350W rear hub motor, 36V lithium cell battery, both throttle control and pedal assist modes, Shimano 7 speed gear system and 26″ x 1.95″tires.
The UnitPackPower 52V 20AH with G2500mAH cells is have a long runtime, deep discharge recover, service life, and superb performance. This battery pack can be mounted in most positions, it resists vibration, shock, and is small and lightweight. It has a great cycle life: 800-1000 Cycles with DOD 80%, no acid (No spill or leak problems), and it charges very fast in comparison to other types of battery.
The Ancheer 250W Electric Mountain Bike features a strong 100 percent aluminum alloy frame, 21-speed transmission system, Lithium-Ion battery (36V 8Ah) which allows you to travel 50km on a single charge (pedal assist).
The Leed 250 Series 10k+ electric bike kit powered by Samsung lithium cells is the quickest and easiest way to start e-biking today. This kit includes everything you need to assemble your e-bike within five minutes from start to finish of installation.