Weijiang Power is a professional NiMH battery pack manufacturer with 16 years of factory experience. We design and produce custom rechargeable NiMH battery packs in a wide range of voltages (4.8V, 6V, 7.2V, 8.4V, 9.6V, 10.8V, 12V and beyond), capacities and configurations. Our packs power medical devices, industrial equipment, emergency lighting, cordless phones, consumer electronics and more. We accept small-batch custom orders and large-scale OEM/ODM production with stable quality and fast lead times.
| Voltage | Typical Capacity Range | Cell Configuration | Common Applications |
|---|---|---|---|
| 4.8V | 500 – 3000 mAh | 4×AA / AAA | Cordless phones, emergency lights |
| 6.0V | 800 – 3500 mAh | 5×AA / Sub-C | RC toys, power tools |
| 7.2V | 1000 – 5000 mAh | 6×AA / Sub-C / SC | Medical devices, industrial backup |
| 9.6V | 1200 – 4500 mAh | 8×AA / Sub-C | Emergency lighting, security systems |
| 12.0V | 1500 – 8000 mAh | 10×Sub-C / C / D | Solar storage, UPS, heavy equipment |
| Custom | Per specification | Any series × parallel | OEM/ODM projects |
Our custom NiMH battery packs are widely used in:
With a 12,000 m² factory, 200,000 cells daily production capacity and 16 years of NiMH expertise, Weijiang Power delivers reliable custom battery packs to buyers in over 50 countries. Our in-house R&D team supports full custom design — from cell selection and pack configuration to PCM design and enclosure molding. We provide complete documentation (UN38.3, MSDS, CE, RoHS) and dedicated after-sales support.
Ready to start your custom NiMH battery pack project? Request a free sample or send us your specifications (voltage, capacity, dimensions, connector type) and our engineering team will respond within 1 business day.
Every custom NiMH battery pack we build uses cells verified to the following performance standards. All cells are 100% tested for capacity, internal resistance and voltage before assembly.
Cycle Life: 80%+ after 1000 cycles
Self-Discharge: 84% after 6 months @ 20°C
Discharge Voltage: Stable plateau at 0.2C–2C (D-cell representative)
| Parameter | Standard | Test Method |
|---|---|---|
| Cycle Life | ≥1000 cycles (80% DOD) | 0.5C charge / 1C discharge, 25°C |
| Self-Discharge | ≤16% / 6 months @ 20°C | Standard charge, store 6 months, measure |
| Operating Temp | Charge 0–45°C, Discharge −20–55°C | Environmental chamber test |
| Internal Resistance | ≤30 mΩ (AA cell, typical) | AC milliohm meter @ 1kHz |
| Capacity Tolerance | ±5% of rated capacity | 0.2C discharge to 1.0V |
A custom NiMH battery pack is an assembly of 1.2 V nickel-metal hydride cells connected in series and sometimes parallel to reach a required voltage and capacity. Cells are matched and tab-welded, then fitted with wires, connectors, optional PCM/BMS protection, NTC thermistors and an enclosure. Because every cell uses a 1.2 V nominal voltage, a pack's voltage is a multiple of 1.2 V — for example 4.8 V (4 cells), 7.2 V (6 cells), 9.6 V (8 cells) or 12 V (10 cells).
Standard cells and common configurations are available from about 100 pieces, while fully custom tooling and packaging are quoted against the project volume. Ask for a sample run before committing to a mass-production order.
Yes. NiMH cells share the same 1.2 V nominal voltage and the same cylindrical footprint as NiCd, so they are often a drop-in upgrade with higher capacity, lower memory effect and no toxic cadmium. Charger compatibility should be confirmed before switching.
Custom samples are typically completed in 7–10 days, and mass production takes about 15 days after the sample is approved, depending on configuration and quantity.
Packs are supplied with CE, RoHS, REACH, PPWR, IEC 62133, UN38.3 and MSDS documentation, backed by ISO 9001 and IATF 16949 quality systems. Specific documents can be matched to your market during quotation.
