Bafang for best rang

Katysax

Member
There is a local shop that builds bikes around the Bafang bbs02. They usually use the 36 volt motor with an option for the 48. The bbshd is also an option. They claim that the 36 volt motor will get the best range because it is less powerful. Is this true? What would you use if you don’t care about speed, 20 mph at most is plenty, but you care a lot about range? The bike would be used on road in an area where there are some mountain passes of 1000-1500 feet of elevation at no more than a 6% grade.
 

harryS

Well-Known Member
I have the option of loading up either a 36V or a 48V pack in my ebikes as the controller will adapt when the battery is connected. The few times I have tried to cover the same route at the same speed, the bike uses about the same power (watt-hours) . It's not that easy to compare using pedal assist because the bike wants to go faster with higher voltage. So in a sense, your bike seller is correct. Most of his customers will report more range on the BBS01 because they are not going as fast. . However, physics says that if one maintained the same speed, the same energy would be used.

Another consideration is your battery size. A small 36V 10AH pack is 360 watt-hours. A small 48V 10AH pack is 480 watt-hours. Probably not much difference in price or size , but 33% more range. Now if you already have other ebikes, and if it is possible to share batteries, then pick a common voltage.

I would say that the BBS02, ridden slow, will make you happier in the long run. I have one, and ride it pretty slow.It only runs on 48V tough. I did my voltage comparisons on a hub motor.,
 
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Katysax

Member
Thanks. That is very helpful. I have another ebike but it won’t be possible to share batteries. I’m leaning to the 48 volt.