Frequently Asked Questions About Battery Chargers

We are a battery charger manufacturer. Linjia Power is based in Qinlan Town, Tianchang City, Anhui Province, China, with ODM engineering as a core capability and OEM mass production as a manufacturing foundation. We integrate charging‑solution development, PCB‑related manufacturing, housing mould development and injection moulding, assembly, testing and packing within one manufacturing system.

Our core technical team has more than 20 years of experience in charging power technology. Engineering work can include charging‑solution evaluation, circuit and PCB design, charging‑profile matching, structural and thermal coordination, connector definition, prototype development and project verification according to the battery, BMS, application and target market.

Linjia operates approximately 10,000 m² of production space with more than 50 employees. The manufacturing system includes three SMT lines, two assembly lines, a dedicated potting line, three injection moulding machines, wave soldering, electrical performance testing, dielectric withstand testing, full‑load burn‑in, labelling and packing. This helps us control more key steps inside the factory rather than relying only on external assembly.

Yes. Linjia products have been supplied to more than 50 countries and regions. We work with vehicle manufacturers, battery brands, importers, wholesalers, regional distributors and equipment suppliers that need standard or customized battery charger solutions.

Yes. Factory visits can be arranged in advance. Depending on the visit plan and production status, buyers can review relevant manufacturing areas, equipment, quality‑control checkpoints and sample discussions with the engineering or international business team.

Linjia’s core manufacturing system is in China. Company information also states that production bases in Bangladesh and Türkiye are operating, a Thailand overseas warehousing centre is in operation, and a Brazil production facility is under development. The suitable supply route should be confirmed project by project according to model, quantity, material preparation, destination and local availability.

We manufacture battery chargers for lead‑acid and lithium battery projects, including LiFePO4 applications, with common product platforms covering 6V–72V. Key B2B ranges include 36V, 48V, 60V and 72V chargers for electric two‑wheelers, E‑rickshaws and other battery‑powered equipment. Final output voltage and charging current must be matched to the exact battery system.

Yes. 48V, 60V and 72V are important project ranges for Linjia. We can evaluate different charging‑current options for lead‑acid or lithium systems according to battery capacity, full‑charge voltage, BMS limits, expected charging time, thermal conditions and application requirements.

Typical applications include E‑bikes, seated electric scooters, electric mopeds, electric motorcycles, E‑rickshaws and electric three‑wheelers, mobility equipment, small energy‑storage equipment and other battery‑powered devices. The charger should always be selected by the actual battery and system requirements rather than by the vehicle name alone.

No. Two batteries with the same nominal voltage may require different full‑charge voltages, charging profiles, current limits, BMS logic, connectors or polarity. Before approval, we recommend confirming battery chemistry, nominal voltage, full‑charge voltage, capacity, maximum charging current, BMS requirements, connector pinout and operating environment.

Please send the battery type, nominal voltage, full‑charge voltage, capacity (Ah), preferred charging current, application, BMS requirements if applicable, connector photo or pin definition, polarity, AC input and plug requirement, operating environment and expected order quantity. A current charger sample or label photo is also useful for replacement projects.

Yes, but the charging method is not interchangeable. Lead‑acid and lithium battery systems use different charging profiles and protection logic. For lithium and LiFePO4 projects, the BMS, cell configuration, full‑charge voltage, current limit and communication requirements—if any—must be confirmed before the charger is approved.

Yes. OEM/ODM projects can cover AC plugs, output connectors, cable length and gauge, polarity, pin definition, strain relief and related labelling. For replacement or vehicle projects, we recommend confirming the actual mating connector and pinout with a photo, drawing or sample before mass production.

Yes. Depending on the project, Linjia can review the input voltage range, thermal design, component configuration, housing material, cable selection, protection functions, moisture treatment and cooling method. Markets with high heat, humidity, dust, unstable input or long operating hours should be evaluated with the real application conditions rather than a single generic specification.

Yes. Depending on power level and application, projects can use naturally cooled, fan‑cooled or potted structures. The choice should consider output power, ambient temperature, dust, moisture, noise, serviceability and cost. Any IP or waterproof performance claim should only be used when the exact model has completed the applicable verification or testing.

Yes. We support both OEM and ODM projects. OEM work can include electrical specifications, plugs, connectors, cables, labels and packaging. ODM projects can go further into charging‑solution development, circuit and PCB design, charging‑profile matching, housing and structural development, appearance design and private‑mould projects where required.

A typical project starts with requirement collection and battery‑system confirmation. We then carry out engineering evaluation, define the charger specification and interface, prepare a prototype or sample, verify the sample, confirm revisions if needed, and move to pilot or mass production after approval. Production, testing, packing and order records are then controlled according to the confirmed project version.

Yes. Samples are recommended for new projects so the buyer can verify electrical matching, connector fit, charging behaviour, thermal performance, labelling and physical structure before mass production. For many projects, sample development can be arranged in approximately 5–15 days after the specification is confirmed; exact timing depends on customization depth and material readiness.

Our standardized quality checkpoints include incoming inspection, semi‑finished testing, finished‑product electrical performance testing, dielectric withstand testing, full‑load burn‑in and final order verification. Exact inspection items can vary by model and project requirement. Linjia has obtained ISO 9001 quality management system certification.

Linjia has ISO 9001 quality management system certification. Relevant charger models can also be supported by CE certification and applicable IEC testing documentation, depending on the exact model, electrical specification and target‑market requirements. Certification applicability should always be confirmed for the specific product before it is displayed or committed to a customer.

Yes. Projects can include customer logos, labels, product codes, cartons, manuals and other branded packaging. Where required, Linjia can also evaluate custom housing colours, structural changes, appearance development and private‑mould housing projects.

Yes. Linjia can support order packing, export coordination and international delivery arrangements according to the agreed Incoterms and project requirements. Packing method, carton markings, pallet requirements, shipment route and delivery schedule should be confirmed with the actual order quantity and destination.

If a problem occurs, our team reviews the case using the available order records, photos, videos, electrical data, batch information and—when necessary—returned or failed samples. The next action is determined by the verified cause and the agreed project terms. Keeping the exact model, batch and connector information helps speed up technical review.