E-Bike Battery 48V 12Ah Downtube Pack
The 48V 12Ah downtube pack is a dual lithium-ion mid-drive e-bike battery built on brand 18650 cells, as listed. Dimensions are listed as 39.6×9.4×8.9 cm and weight as 4.0kg. Warranty is listed as one year, and OEM/ODM is listed as acceptable for this pack — both are listing statements, not site-wide promises.
- LiFePO4 packs in 12V, 24V and 48V
- 7 x 12V models with full spec tables
- Portable stations and hybrid NiMH fitments
- Certificates available upon request
No founding year, headcount, phone or named contact is published on this site: those records conflict between sources and are not settled. Contact goes through the inquiry form.
Downtube mounting is the form factor in the listing name, and it is also the fitment question: a downtube pack must match the bike's downtube, mount and controller interface, and none of those interface values is stated in the table read for this pack. Voltage (48V) and capacity (12Ah) alone do not establish fitment.
Generic illustration, not a photograph of any product.
Specification table (as listed)
| Voltage / capacity | 48V / 12Ah |
|---|---|
| Cell type | Brand 18650 cells (as listed) |
| Form factor | Downtube, dual lithium-ion mid-drive (as listed) |
| Dimensions | 39.6×9.4×8.9 cm |
| Weight | 4.0kg |
| Warranty (listing) | 1 year |
| OEM / ODM (listing) | Acceptable (as listed) |
Values are recorded exactly as listed for this model. Where a figure is absent, it was not read for this model and is not inferred from another model.
What the listing names
No named standard is published for this pack.
Custom e-bike packs at other voltages and capacities are a separate matter: they are covered on the custom e-bike guide page as corroboration-level listings, not as specifications, and they are not merged into this model's table.
Certificates follow the site-wide line: “Certificates available upon request.” No certificate number is published. Before payment, confirm MOQ, lead time, voltage, warranty and certification scope for your order.
Warranty and fitment, as listed
Warranty is listed as one year and OEM/ODM as acceptable for this pack, both as listing statements rather than site-wide promises. A buyer should confirm the warranty position and the mount and controller interface for the bike actually fitted, since voltage and capacity alone do not establish fitment.
Downtube fitment checks
A downtube pack's fitment check has four parts: the downtube's dimensions against 39.6×9.4×8.9 cm, the mount type against the bike's downtube mount, the controller interface against the mid-drive system, and the motor's voltage demand against 48V. Weight is a fifth check at 4.0kg, carried on the frame rather than in a bag, so the bike's handling and the mount's load rating should be confirmed. None of those interface values is stated in the table read for this pack beyond the dimensions and weight, so the mount and controller questions belong in the pre-order confirmation with the bike model in hand.
Before ordering
Before payment, confirm MOQ, lead time, voltage, warranty and certification scope for your order.
Confirm the specification for the model actually ordered, not for a neighbouring model or a series range.