When i first ordered this bag i thought it looked big filling the bike frame, hoping to put my 36v 15ah battery and controller inside. When it arrived i was initially shocked as it actually looked too small. But once i tried the battery and controller, everything fit snugly. So i fed the wiring through the supplied hole, although i had to remove some wiring plugs and re-attach them, an easy enough job with a small flat head screwdriver. The battery fit snugly and the contoller and wiring managed to fill the upper section. I had to cut a small section at the front right side for access to the charger port and on and off switch. The only reservations i have is with the velcro, while it holds now, its not super sticky 3m quality. But as long as it does hold, its perfect for the job. For reference its an 18" frame in the photo..Read full review
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