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am i missing something here, or is that i don't understand the battery technology. most of the batteries i have looked at on line; china aliexpress and bafang in tube models (bt f040.b360.c) all have a 2 wire dc output (+ and -) based on the voltage of the battery, say 36, 52, or 72 volts. the...

has anyone completed or is working on a diy lightweight e bike with a thru axle hub , battery in the down tube design, similar to a x20 mahle system? (scott addict, orbea gain). There are only a few thru axle hub motors I know of, grin all axle (9lbs, which is too heavy), mahle x20 (3 lbs...