Cemoto 280Wh water-bottle range extender
Designed for Cemoto frames — also fits Trek Rail bottle cage mounts
Trek
Cemoto
Ride1Up
Current live price · Amazon
$499
as of 2026-08-03
Fit & compatibility notes
Fit note
Cemoto frame direct fit
Cemoto commuter frames have a stock cage mount at the down-tube sweet-spot — the extender slips in without zip-ties.
Fit note
BMS interlock pass-through
Powers the controller via the same harness as the OEM pack so the firmware reports one combined state-of-charge, not two separate gauges.
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