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.

Key Specifications & Common Configurations

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

Core Advantages

High Safety & Stable Quality: NiMH chemistry is non-flammable and environmentally friendly. Each pack undergoes charge-discharge cycling, voltage testing and insulation testing before shipment.
Wide Temperature Range: Charge at 0–45°C, discharge at −20–55°C — suitable for industrial and outdoor environments.
High Discharge Rate: Up to 2C continuous discharge, supporting power tools and high-drain devices.
Long Cycle Life: 1000+ charge-discharge cycles under normal use, reducing total cost of ownership.
Custom Connectors & PCM: JST, Molex, bare leads, custom harnesses; optional protection circuit module (PCM), NTC thermistor and fuel gauge.
Certifications: CE, RoHS, REACH, UN38.3, MSDS — safe for global air and sea shipping.
Fast OEM/ODM Service: Free sample evaluation within 7–10 days; mass production lead time 15–25 days. MOQ flexible for custom packs.

Typical Applications

Our custom NiMH battery packs are widely used in:

Medical & healthcare devices (infusion pumps, diagnostic equipment, patient monitors)
Emergency & solar lighting systems
Industrial backup power and UPS
Cordless telephones and two-way radios
Power tools and RC hobby devices
Consumer electronics and home appliances
Security and alarm systems

Why Choose Weijiang Power

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.

Cell Performance & Quality Assurance

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