ALX148B — Large-Capacity Tube Downtube

Name: ALX148B Large-Capacity Tube Downtube
Brand: ALX
SKU: ALX148B

ALX148B Empty Downtube E-Bike Battery Case for 18650 Batteries. Large-Capacity Tube Downtube

Round-section tube housing for high-capacity 18650 builds, with the end caps moulded separately.

Quoted per configuration · MOQ 1 piece · reply within 5 hours

Series: Downtube
Voltage: 36–72 V
Cells: 18650 / 21700
Material: ABS
MOQ: 1 pc
Lead time: ≈15 days

OEM available

Get a Quote Request a Sample

This case is sold empty. Cells, BMS, harness and pack assembly are not included — those stay with you or your assembler. Tell us the cells you intend to use and we will confirm the internal volume is sufficient.

Order one. No sampling fee and no minimum before you can test the fit.

Cable exit to your drawing. Choose the exit position rather than adapting the case afterwards.

Quoted in five hours. With the technical detail, not just a price.

Specification — ALX148B

Parameter	Value
Model	ALX148B
Product name	ALX148B Empty Downtube E-Bike Battery Case for 18650 Batteries. Large-Capacity Tube Downtube
Series	Downtube
Housing type	Empty shell — cells, BMS and harness not included
Fitment	Downtube
Cell configuration	18650 — high-capacity build
Source listing	1688 offer 990284113976
Cable exit	Selectable position, specified at order
Mounting arrangement	Selectable, specified at order
Colour	Black as standard; custom colour available
Branding	Logo printing available (OEM)
Mould	Custom mould opening available (ODM)
Weight	Confirmed per configuration on request
Minimum order	1 piece
Price	Quoted per configuration — within 5 hours
Standard lead time	About 15 days
Quote turnaround	Within 5 hours

Dimensional drawing of the ALX148B empty e-bike battery case showing the side and plan views with the mounting centres and overall envelope dimensioned — Dimensional drawing — ALX148B Overall envelope and mounting centres as dimensioned.

The drawing above is the envelope this housing is moulded to. Weight and internal clearance depend on the cell configuration you build to, so those are confirmed per order — a drawing with the internal envelope and cable-exit positions is issued on request so you can check the fit against your frame — ask for it here.

Ordering & lead time

Order stage	Detail
Minimum order	1 piece
Sample order	Same 1-piece minimum — no sampling fee
Quote turnaround	Within 5 hours of your enquiry
Standard lead time	About 15 days
Logo printing	Adds a few days for set-up
Custom colour	Adds a few days for matching
Custom mould	Quoted separately with its own timeline

What we need from you	Why
Voltage	Confirms the internal envelope
Cell type (18650 / 21700)	Determines pack volume and holder clearance
Frame or space dimensions	Confirms the external fit
Cable-exit position	Set at order
Mounting preference	Fitted or loose
Colour and artwork	Only if you want OEM branding
Destination country	Determines the shipping terms we quote