Custom Lithium Battery Packs,
Built in Our Own Factory

OEM/ODM Li-ion & LiFePO4 battery packs for power tools, drones, energy storage and digital devices — assembled with genuine, Grade-A cells from EVE, Lishen and Samsung SDI. No refurbished cells. No B-grade. Ever.

Request a Quote How We Build
12+Years in battery PACK
4Production lines
500+Packs per day
3S–14SSeries configurations
45C–160CHigh-rate capability

What We Build

Four product lines, one factory, one quality standard — every pack is cell-graded, BMS-protected and 100% aged before shipment.

Custom power tool battery pack

Power Tool Battery Packs

18V / 40V compatible packs, 2.0–6.0Ah, slide & pod styles. Honest capacity labeling and OEM private-label service.

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High-rate LiPo drone packs in volume production

Drone & UAV Battery Packs

High-rate LiPo (45C–160C) and 21700 packs, 3S–14S, for FPV, industrial and agricultural drones. OEM for brands.

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Digital device battery packs

Digital Device Batteries

18650 / 21700 / Li-pouch packs for consumer electronics, with custom PCM and connectors.

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12V 24V LiFePO4 deep cycle battery packs ready for shipment

LiFePO4 Deep-Cycle Storage

12V / 24V 50–100Ah drop-in replacements for lead-acid: RV, marine, solar and off-grid systems. OEM/ODM.

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LiFePO4 prismatic cells graded and paired on white background

Portable Power Stations — Custom

Custom portable power station solutions with AC inverter and multi-port DC/USB output — built around LiFePO4 packs to your specification.

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BMS design and assembly

Custom OEM / ODM

Your specification, our engineering: cell selection, BMS design, enclosure, certification docs and private labeling.

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Automatic cell grading and sorting machines

Why Buyers Choose Chengbang

1

Genuine Grade-A Cells Only

We buy original, brand-new cells from EVE, Lishen and Samsung SDI. Cell brand and grade are honestly declared on every quote.

2

In-House Engineering

BMS design, spot welding, capacity grading and full-load aging all happen in our own plant. We already build 14S 51.8V UAV packs and 120C–160C FPV racing batteries — work most pack shops cannot take on.

3

Complete Documentation

UN38.3, MSDS, IEC 62133, CE and CB reports available for our cell supply chain, with export packing experience.

4

Factory-Direct Response

Quotes within 24 hours, samples in days not weeks, and honest answers from the people who build the packs.

How We Work — From Specification to Shipment

Your specification, our factory. This is the same five-step process we have run since 2012 — and it is what export buyers audit when they visit.

1

Requirement Review

Application, voltage, capacity, discharge, size, connectors, environment — we translate your needs into a build spec.

2

Cell & BMS Selection

Grade-A cells from EVE, Lishen or Samsung SDI, matched to a protection circuit or smart BMS for your use case.

3

Prototyping

Fast samples with real test data: capacity, IR, discharge curve and temperature behavior.

4

Mass Production

Cell grading, precision spot welding, 100% aging and final inspection. Batch records available.

5

Export Delivery

UN38.3/MSDS paperwork from our supply chain, export packing, and shipping coordination.

Workers at the Chengbang assembly line

Quality Equipment On-Site

ProcessControl
Cell gradingAutomatic capacity/IR sorting cabinets
AssemblyPrecision spot welding, BMS assembly, wire harness
AgingFormation & aging cabinets, 100% full-load test
TraceabilityBatch records, cell brand & grade declared on request

What We Need to Quote

Send us any of the following — even a photo of your current pack helps:

1. Application and device model
2. Voltage (S count) and capacity (Ah)
3. Continuous / peak discharge current
4. Dimensions and connector type
5. Target annual quantity

We reply within 24 hours with a specification proposal and pricing tiers.

Send Your Specification
Battery packs with protection boards in assembly

Get a Factory-Direct Quote

Tell us your application, voltage, capacity and target quantity — we reply within 24 hours.

Quick Inquiry

We reply to every inquiry within 1 business day.

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