FAQ

WEIJIANG Battery Factory FAQ

Frequently Asked Questions for B2B Wholesale & OEM ODM NiMH Battery
We are a professional battery manufacturer Huizhou Shenzhou Super Power Technology Co., Ltd. (Brand: WEIJIANG) founded in 2010, with 16 years of battery production experience.

Our 12,000㎡ factory locates at Jinhonghui Industrial Park, Tongqiao Town, Zhongkai High‑Tech Zone, Huizhou, China. We own 4 full production workshops (Pole piece, Assembly, Chemical Lab, Packaging), 150 staff including 10 professional R&D engineers and 10 QC inspectors. Daily automated production capacity reaches 200,000 cells, supporting stable high-volume output for retail and OEM orders. Factory tours & live production viewing are available.
Full set of international compliance certificates for shipping to 60+ countries:
  • System Certifications: ISO9001, ISO14001, BSCI, IATF16949
  • Safety & Environment: CE, SGS RoHS, REACH, IEC6232
  • Shipping Documents: UN38.3 test report, MSDS
All test reports & certificates can be provided for customs clearance & brand audit.
Yes. Our 10‑person R&D team has finished over 1000 customized battery projects for global clients. We equip full testing machines: high‑low temperature tester, charge‑discharge cycle tester, salt spray tester, internal resistance & safety simulation equipment.

We focus on 5 core tech upgrades: high energy density, fast charging, long cycle life, safer eco materials & low self‑discharge performance. We offer free design service under NDA confidentiality agreement for all custom orders.
We provide OEM & ODM manufacturing for worldwide well‑known brands: PHILIPS, Camelion, RAYOVAC, TCL, Vtech, Gembird, OHM etc.

We attend global exhibitions regularly: Canton Fair, Germany IFA, Hong Kong Electronics Fair, India Electronics Show, CES, Vietnam Electronics Show. Our sales network covers North America, Europe, Russia, Southeast Asia, India, Brazil & South Korea.
Compared with common NiMH cells, our factory‑made batteries have 5 competitive strengths:
  1. Ultra‑long cycle life: Rechargeable over 1000 times
  2. Zero memory effect: No need to fully drain before charging, charge anytime
  3. Low self‑discharge (LSD series): Maintain high capacity after long storage, perfect for retail stock
  4. Wide temperature adaptability: Stable discharge from ‑20℃ to 60℃ for outdoor & industrial devices
  5. Eco & safe: Cadmium & mercury free, fully RoHS & REACH compliant, low risk of leakage & explosion
Full size range covered: A,AAA, AA, SC, C, D, 9V & special half‑size cells (4/5AA, 2/3A). Capacity options: AA 400–2600mAh, AAA 300–1000mAh, SC 1100–3300mAh.
One‑stop battery supply line from our factory:
  • Standard & Low Self‑Discharge NiMH cells & custom NiMH battery packs (for Xbox controller, cordless phone, RC car, mining lamp, power tools)
  • Alkaline batteries (LR03, LR06, LR14, LR20, 6LR61)
  • Li-ion battery pack assembly (custom 18650/21700 packs with BMS, tabs and connectors; we do not manufacture lithium cells)
  • Matching NiMH battery chargers: EU/US/AU/UK plug, USB multi‑slot chargers, custom charger function & appearance available.
Wide application for consumer & industrial electronics:

Daily consumer: Digital cameras, wireless keyboards/mouses, remote controls, electric toys, electric shavers, Xbox game controllers, cordless landline phones.

Industrial & hobby: RC models, mining lamps, electric wine openers, small robots, cordless power tools, solar lights, portable medical equipment.
We implement 5 strict full‑process QC inspections for every batch:
  1. IQC Raw Material Inspection: Test cathode, anode, separator & shell before production
  2. In‑line Production Patrol: Real‑time sampling during coating, winding, filling & formation
  3. Aging & Cycling Test: All cells go through standardized charge‑discharge aging to filter defective units
  4. 100% Finished Goods Test: Check voltage, capacity, short circuit & appearance
  5. OQC Shipment Sampling: Random high‑low temperature & cycle life test before delivery
Automated grading machines ensure tiny voltage difference among same batch cells, greatly reduce after‑sales failure of battery packs.
  • Standard ready stock cells: No strict MOQ, small wholesale & cross‑border trial orders supported, ship within 1 working day
  • OEM customized samples: 7‑15 days production, free sample offer (buyer only bears freight cost)
  • Bulk standard orders: 7‑12 days delivery, automated production lines support stable output even in peak season
  • Custom battery packs & chargers: 15‑25 days based on structural complexity; we prepare all customs clearance documents synchronously.
Multiple packaging solutions for different sales channels: Blister card, color box, shrink wrap, neutral white box, retail display carton.

Custom eco‑friendly degradable packaging is available. We support printing your brand logo, product specs & multi‑language instructions on all packages for supermarket, e‑commerce & industrial wholesale.
Yes, we supply full set of export documents one‑stop: UN38.3 report, MSDS, CE, RoHS, REACH test reports, packing list, commercial invoice & dangerous goods packaging documents.

All files meet customs standards of Europe, North America, Southeast Asia, Middle East & Korea, no extra third‑party test cost for buyers.
NiMH uses aqueous electrolyte with far lower safety risk than lithium cells, less strict shipping restrictions.

Our complete UN38.3 certification supports sea freight, air freight & express delivery without complicated dangerous goods approval, effectively avoid customs detention & shipment delay.
  1. Factory direct price: No middleman markup, tiered volume discount & annual rebate policy
  2. One‑stop purchasing: Cells, battery packs & chargers in one supplier to simplify your supply chain
  3. Exclusive technical support: Dedicated engineer team, free solution design & drawing output
  4. Production transparency: Real‑time workshop photos & production schedule update for bulk orders
  5. Complete after‑sales guarantee: Free replacement for defective goods caused by production flaws
  6. Global exhibition resource sharing: Joint brand promotion & overseas market development opportunities
Absolutely. We supply full technical documents free of charge: charge/discharge curves under different rates, high & low temperature storage curves, official datasheets & battery matching selection suggestions.

Our engineers will recommend the most suitable capacity & discharge rate cells according to your device working conditions to avoid insufficient runtime or capacity mismatch.
Standard NiMH cells: 12‑month factory warranty. Custom NiMH battery packs: 6‑12 months warranty (adjusted by application scenarios).

Any quality defects like insufficient capacity, leakage or short circuit caused by production issues will be replaced or refunded free of charge within warranty period. We provide lifelong technical consultation for battery matching, charging skill & export compliance problems.
For everyday rechargeable and light-industrial use, NiMH is usually the best balance: it can be recharged 500–1,000+ times, contains no toxic cadmium, performs over a wide temperature range, and is cheaper and safer to ship than lithium.

NiCd is largely obsolete because of memory effect and cadmium. Alkaline is single-use and expensive for high-drain repeat use. Lithium offers higher energy density for very compact or high-voltage packs but costs more, requires a BMS and faces stricter shipping rules. Our engineers match the chemistry to your device's voltage, current, runtime and budget.
Yes. We serve battery wholesalers, distributors, chain retailers and resellers with low-self-discharge NiMH cells and multipacks in blister cards, color boxes or retail display cartons, your own brand and logo printing, multi-language packaging, mixed-size cartons and low MOQ for trial listings.

Our LSD series holds charge on retail shelves, and we provide neutral or branded packaging together with CE, RoHS, REACH and UN38.3 documents. Send your target sizes and packaging to receive a wholesale price list.
To design an accurate custom pack, please provide:
  • Target voltage and capacity (e.g. 7.2V 2000mAh)
  • Cell arrangement (series / parallel)
  • Size limits, connector and wire type
  • Continuous and peak discharge current
  • Operating temperature and expected cycle life
  • Certifications, quantity and packaging needed
Typical packs are built from AA, AAA or Sub-C cells in 4S–20S arrangements such as 4.8V, 6V, 7.2V, 8.4V, 9.6V, 12V and 24V. Send your requirements or photos of the device and we will return a drawing, datasheet and quotation.
We supply standard sizes AAA, AA, 2/3A, 4/5AA, Sub-C, C, D and 9V plus many half-size cells, and we build custom multi-cell packs from 2.4V to 24V and higher.

AA covers roughly 400–2600mAh, AAA 300–1000mAh and Sub-C 1100–3300mAh. Common ready-made packs include 4.8V (4S), 6V (5S), 7.2V (6S), 8.4V (7S), 9.6V (8S), 12V (10S) and 24V (20S) with tabs, leads, plugs, PCM and shrink wrap.

Need more information or free samples?

Contact our sales team for quotation, datasheets and certification files.

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Professional battery factory, support OEM & ODM customization.