OEM E-bike Battery Packs From an 11-Model Library

We manufacture custom OEM/ODM lithium-ion battery packs for ebike and e-mobility brands worldwide. From the first engineering consultation through certified mass production, our team manages every step: cell sourcing, BMS firmware, enclosure design, prototyping, third-party certification, and volume manufacturing at our Guangdong factory.

Our OEM program is designed for brands that need full design ownership. We sign mutual NDA before sharing any technical details, provide CAD files and BOM on request, and can program the BMS with your brand’s proprietary communication protocol. Regional exclusivity agreements are available for volume commitments, ensuring your product specification is not shared with other accounts.

Quality control is documented at every stage. Each production batch includes a cell traceability report (lot numbers, QC data), BMS test certificates, capacity verification records, and the full certification package required for your target market. CE, UN38.3, and IEC62133 are standard deliverables; UL2271, FCC, RCM, and KC are available with advance scheduling.

Start from a platform, not a blank sheet

Eleven enclosure platforms are already in production, covering 36V, 48V, and 52V across 36V 5–15Ah, 48V 15.6–40Ah, and 52V 20–30Ah. Anchoring a new program to one of them is the single biggest lever on cost and schedule, because it removes enclosure tooling from the critical path entirely.

Model	Format	Voltage	Capacity	Fit constraint
KT-E57	Integrated frame	48V	15.6–20Ah	405.4mm frame channel
KT-E60	Integrated frame	48V / 52V	23–30Ah	465.5mm channel, 125.4mm section
KT-E60-PRO	Integrated frame	48V / 52V	26–40Ah	465.5mm channel, 136.4mm section
KT-E09	Down-tube / shark	48V	17.5–25Ah	367.5 × 140.0mm, 57mm rail (3 fixings)
KT-E09-PRO	Down-tube / shark	48V	17.5–25Ah	367.5 × 140.0mm, 60mm rail (4 fixings)
KT-E33	Down-tube / shark	52V	20–30Ah	367.5 × 157.48mm, 57mm rail (3 fixings)
KT-E33-PRO	Down-tube / shark	52V	20–30Ah	367.5 × 157.48mm, 60mm rail (4 fixings)
KT-S01	Seatpost	36V	5–7.5Ah	Ø53mm tube, 410 / 610mm
KT-S02	Seatpost	36V	5–15Ah	Ø53mm tube, 350 / 480 / 610mm
KT-D02	Silver-fish	36V / 48V	65–104 × 18650	108 × 76mm, 265–385mm
KT-D15	Silver-fish	36V / 48V	39–78 × 21700	110.5mm, 285–385mm

Inside an existing family we can change cell chemistry and format, parallel count, BMS firmware and communication protocol, connector and harness layout, labelling, and retail packaging without new tooling. Outside it, a bespoke enclosure is a tooling project with its own lead time and cost. Both paths are open — the distinction matters because it changes your launch date, and it is worth resolving in the first technical call rather than after a quote. Send a frame drawing or a sample and we will tell you which families fit.

Chemistry, cells, and what to specify

We build in Li-NMC, Li-NCA, and LiFePO4, in 18650 or 21700 format. The choice is a genuine trade rather than a ranking: NMC and NCA carry more energy for a given weight and volume, which is what an integrated-frame consumer bike needs; LiFePO4 trades energy density for cycle life and thermal stability, which is often the better economics for rental and delivery fleets that cycle a pack daily for years. Our NMC versus LiFePO4 comparison sets out the numbers behind that decision.

Catalog builds reference EN50604, RoHS, REACH, IP67, and VO-rated materials. To open a program, we need the target voltage and capacity, the controller’s continuous and peak current, the display or communication protocol, the enclosure or frame constraint, your certification targets by market, and an indicative annual volume. Mutual NDA is signed before any technical detail is exchanged, CAD files and BOM are available on request, and regional exclusivity is available against volume commitments. If you are still shortlisting suppliers, our sourcing guide covers what to ask every candidate, not just us.