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Integrated & In-Frame Battery Cases

Hidden housings that sit inside the down-tube, plus conversion kits with aluminium-alloy reinforcement.

16 models 36 V – 72 V 18650 / 21700 MOQ 1 piece
Hidden fit ALX014 Anti-Theft Lockable Cover — empty e-bike battery case
ALX014 · INTEGRATED

Anti-Theft Lockable Cover

Recessed fit with a lockable top cover — the commuter answer to pack theft.

MOQ 1 · quote in 5 hDetails
Hidden fit ALX006 Built-In Precision Fit — empty e-bike battery case
ALX006 · INTEGRATED

Built-In Precision Fit

Precision-fit built-in housing for e-bike frames, 36–72 V compatible.

MOQ 1 · quote in 5 hDetails
Hidden fit ALX131 Invisible Integration — empty e-bike battery case
ALX131 · INTEGRATED

Invisible Integration

Clean-line invisible integration for premium frames, 36–72 V.

MOQ 1 · quote in 5 hDetails

Showing all 16 models in this series. Every one is an empty shell — you supply cells, BMS and harness.

About this series

Why buyers choose Integrated

Integrated housings disappear into the frame. There is no visible case on the down-tube — the pack is inserted through an opening and closed with a cover that matches the frame line. This is what premium and city e-bikes increasingly use, because the frame silhouette stays clean.

Because the housing geometry has to match the frame, most of this range is made to a custom internal envelope. Send the frame drawing or the space you have and we will confirm whether a current model fits or whether we open a mould.

Aluminium alloy and aluminium-reinforced ABS/PC constructions are used here rather than plain plastic, because an in-frame housing carries structural loads the external cases do not.

  • Fully hidden fitment — No visible hardware when the cover is closed.
  • Aluminium and reinforced ABS/PC — Built for structural loads, not just cover duty.
  • Custom internal envelope — Most models are run to your drawing.
  • Mould opening available — Where nothing fits, we quote a new tool.
Get a Quote All battery cases
Integrated in-frame battery case on a city e-bike
Integrated in a city frameHidden inside the down-tube
Other fitments

Compare with the rest of the range

Hailong Battery Cases

The universal fitment. Waterproof ABS and PC+ABS shells with key lock, cable exit and mounting kit options, sized for 18650 or 21700 packs.

Silver Fish Battery Cases

Tapered shells that slide into a frame or seat-post carrier — the retrofit standard for folding bikes, mountain frames and conversion builds.

Downtube Battery Cases

Housings that sit inside the down-tube, taking 18650 packs to 104 cells. The largest family we hold tooling for.

Rear Rack Battery Cases

Flat rack-mounted housings for cargo, delivery and long-tail builds — to 104 cells, without widening the bike.

Water Bottle Battery Cases

Mounts on standard bottle bosses — the lowest-cost way to add range to a frame with no down-tube space.
Ten Haitian injection moulding machines running in a line at the ALX factory in Guangzhou
Moulded in house10 Haitian injection moulding machines
Finished e-bike battery cases racked ready for dispatch
Racked and readyEmpty shells, inspected before dispatch
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Tell us your voltage, cell type and dimensions

That is all we need to point you at the right case. Quoted within five hours, MOQ one piece.

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