I ordered a new 50v electric bicycle battery model INR18650-20R. I got it over a week ago and have put over 100 miles on the bike since I got it so I could give a decent review. It uses very high power cells the 18650-20R with NCA type cell, 10C rated with Capacity of approximately 1.95Ah. The electric bicycle battery pack is 11.7ah. Compared to my lifepo4 10ah pack I like it a lot better but there is some major difference in the lipo and lifepo battery’s. This new battery acts more like a regular battery meaning it slowly loses its charge unlike the lifepo4 that seems to go from full charge to dead in a few minutes, when I first charged the battery I was amazed at the speed and tourque the first few miles, on a stretch I usually do around 26.7 to 27.1 mph I was doing 29.3 mph, considerable difference, climbing hills there is a big difference also. Still have to pedal assist up the big mountain but with half the energy I had to use with the lifepo4 battery. Another awesome thing about the battery is it is considerably lighter than my lifpo4 10ah battery which is nice when I carry my e-bike up the stairs, the battery comes with a bag that fits in the frame that works for all their frame battery’s. They also make a 50v 25ah battery pack that fits in the same bag, the battery set in the triangle makes a huge difference on the handling of your motorized bicycle here is a link the em3ev battery’s. http://em3ev.com/store/index.php?route=product/category&path=35 I emailed back and forth with paul the owner many times before I purchased the battery, top notch and great customer service, the only drawback I can find with the battery is the bag works like a big sail so a cross wind will catch you off guard, I am making a new leather bag the size of the battery at this time which as you can see in the picture is a lot smaller then the bag it is in in and should fix the wind problem. Any questions you may have ask away, if I cannot answer them I will get an answer from paul
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