Hailong Battery Cases

Why buyers choose Hailong

Hailong is the housing profile most e-bike assemblers re-order, because it fits the widest range of frames without modification. The case sits on the down-tube on a separate dock, so the pack can be removed for charging or storage.

Our Hailong range covers the working voltages from 36 V to 72 V and both 18650 and 21700 cell formats. Waterproof construction is standard, flame-retardant grades are available on selected models, and the whole range is offered as empty shells with selectable cable-exit positions and mounting arrangements.

If you are replacing an existing Hailong case or building a first prototype, order a single piece — the minimum is one unit and there is no sampling fee.

• Runs 36 V to 72 V — One housing family across the voltages your range actually covers.
• Key lock as standard on most models — Anti-pick brass cylinder, two keys supplied.
• Mounting kit and cable exit to order — Built to your assembly process, not ours.
• MOQ 1 piece — Validate the fit before committing to a container.