Last weekend we borrowed a sewing machine to make new curtains for the apartment. When I was sewing the curtains I realized that It wouldn’t be very difficult to make a custom battery bag for my e-bike. I would like a bag that I could mount in the frame triangle and have room for 4 Turnigy 6S 5Ah batteries. Doing some measurements, calculations and drawing I came up with this design

I went to the fabric store and found a black nylon fabric that had a PVC layer on one side. This should be fairly water resistant and I plan to spray it with some textile waterproofing spray as well. I was recommended to use a thread for furniture which is much stronger than ordinary thread as well. A couple of hours thinking, cutting, and sewing later:





The bag fits perfect on the bike!


Pleas write a comment if you think I should make some kind of drawing and description on how to make a bag like this.
Damn, you sewed that bag together? Mad props!
Yep! Didn’t sleep through crafting class in school.
Great article. Going to do same job, upgrade power and phase wiring . I,ve got a 1000 watt wheel , that I run at 72 volts , I,ve upgrade the controller, a diy job . Also upgrade the wiring up to the wheel . Didn’t realise you could get access to the inside of the wheel , by just taking the cover off. I thought you needed a 3 jaw puller, incidentally got my wheel on ebay , it’s made by a company called cne bikes. Do you know what kind of model / motor this is? Is it probably a 9c clone / copy . Thanks for your very informative post / article ,
Frank