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Portable power stations — solar generators — are consumer brands built on outsourced battery packs. The brand designs the industrial design, the app, and the marketing; the battery pack — cells, BMS, enclosure, wiring — is manufactured by a specialist partner. This page is for brands and cross-border sellers who need LiFePO4 battery packs engineered to their product’s dimensions, electrical specification, and certification roadmap.
What the Battery Pack Includes (and What It Doesn’t)
LJY Energy supplies at the battery-pack level: prismatic or pouch LiFePO4 cells, BMS, enclosure, wiring harness, and connectors — built to your mechanical and electrical specification. The inverter, MPPT controller, AC/DC outlets, display, and outer industrial design are the brand’s domain (or coordinated separately). This boundary is stated upfront because pack-level OEM is a different business from turnkey power-station manufacturing — and the right partner depends on which one you need.
The Standard Capacity Bands
| Band | Typical pack | End product | Buyer profile |
|---|---|---|---|
| 300–500Wh | 12V 25–40Ah class | Entry portable stations, camping power | Volume brands, seasonal sellers |
| 500Wh–1kWh | 12V/24V 40–80Ah class | Mainstream solar generators | Established brands, private label |
| 1–3kWh | 24V/48V 40–60Ah class | Home-backup portable units | Premium brands, professional channel |
These are starting points, not catalog SKUs — every pack is dimensioned to the brand’s enclosure. The capacity band determines the cell configuration; the brand’s ID design determines everything else.
What Brands Verify Before Committing
- Cell consistency: at hundreds or thousands of units per order, cell-to-cell voltage and internal-resistance matching is the quality line — one weak cell per pack multiplied by 5,000 packs is a warranty catastrophe. Ask for the matching specification and the factory’s consistency data.
- Dimensional discipline: the pack must fit the brand’s enclosure to the millimeter, including connector position, cable routing, and thermal clearances. Tooling and first-article approval precede volume.
- BMS communication: the brand’s main board needs state of charge, cell voltages, and fault flags from the pack BMS — protocol and connector are defined in the engineering specification, not assumed.
- Certification roadmap: target-market certifications (UL, CE, PSE, BIS and similar) are confirmed per project against the destination market — never assumed from a previous project’s certificate.
- Seasonal ordering: brands order ahead of selling seasons (spring camping, hurricane/winter backup). Lead times and production slots are planned against the brand’s forecast — late packs miss the season.
OEM/ODM Process
- Specification: brand provides enclosure dimensions, electrical requirements, BMS protocol, and target certifications.
- Engineering sample: pack built to specification for fit, electrical, and thermal validation in the brand’s product.
- Certification: applicable tests and certifications executed per the project plan.
- Pilot run: small-volume production to validate process consistency before the seasonal order.
- Volume production: scheduled against the brand’s forecast, with reorder driven by sell-through.
Frequently Asked Questions
Do you build complete portable power stations?
No — LJY Energy supplies battery packs (cells, BMS, enclosure, wiring) to brands that build the complete product. If you need turnkey power-station manufacturing, we can discuss what coordination is possible, but pack-level OEM is our defined scope.
What is the minimum order quantity?
MOQ depends on the pack configuration and tooling — confirmed per project. Engineering samples precede any volume commitment.
Can you match our existing pack dimensions?
Yes — send the mechanical drawing, electrical specification, and BMS protocol. First-article approval confirms fit before volume.
Which certifications can you support?
Certification is confirmed per project against your target markets. State the required list (UL/CE/PSE/BIS or others) in your inquiry and we confirm the plan and timeline.
Start an OEM battery-pack project — send your mechanical drawing, electrical specification, target certifications, and forecast volume.
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