Weijiang Wide Temperature Ni-MH Batteries: Specs, Tech & OEM Custom Solutions
Author: Weijiang R&D Dept | Reading Time: 5 Mins
Ordinary Ni-MH cells suffer severe capacity drop and unstable voltage under extreme cold or hot environments. Based on our self-developed composite electrolyte and upgraded electrode materials, Weijiang wide-temperature Ni-MH series supports discharge from -40℃ up to 85℃, with stable performance in vehicles, polar equipment, desert solar and outdoor industrial sensors. This article sorts official specs from our 6 standard datasheets, core proprietary tech, real project cases and full OEM customization service for global equipment manufacturers.
1 Official Standard Cell & Pack Specifications (From Weijiang Datasheets)
Below are mass-production models with full test data from internal delivery specifications, covering AAA/AA single cells and 3.6V T-BOX combined packs:
| Model No. | Nominal Voltage | Rated Capacity | Discharge Temp Range | Max Continuous Discharge | Cycle Life (IEC61951-2) | Typical Weight |
|---|---|---|---|---|---|---|
| WJ H-AAA500 | 1.2V | 500mAh | -40℃ ~ 85℃ | 500mA (1C) | ≥500 cycles | 10.0g |
| WJ H-AAA600 | 1.2V | 600mAh | -40℃ ~ 85℃ | 600mA (1C) | ≥500 cycles | 10.6g |
| WJ H-AA1200 | 1.2V | 1200mAh | -40℃ ~ 85℃ | 1200mA (1C) | ≥500 cycles | 21.5g |
| WJ H-AA1300 | 1.2V | 1300mAh | -40℃ ~ 85℃ | 1300mA (1C) | ≥500 cycles | 22.0g |
| WJ H-AA2200 | 1.2V | 2200mAh | -20℃ ~ 70℃ | 2200mA (1C) | ≥500 cycles | 29.2g |
| WJ H-AAA600 3.6V Pack | 3.6V | 600mAh | -40℃ ~ 85℃ | 600mA (1C) | ≥500 cycles | 37.5g |
Core unified performance of all wide-temperature series: 28-day storage capacity retention ≥60%, internal impedance ≤35mΩ, pass overcharge/over-discharge/short-circuit safety tests, one-year factory limited warranty.
2 Wide Temp Ni-MH VS Ordinary Standard Ni-MH Contrast
| Test Item | Conventional Ni-MH Cell | Weijiang Wide Temperature Ni-MH |
|---|---|---|
| Low Temp (-20℃) Capacity Retention | ≤62% | ≥84% |
| Low Temp Defect | Electrolyte crystallization, steep voltage drop | Anti-freeze composite electrolyte, flat discharge platform |
| Substrate Structure | Ordinary copper mesh, easy puncture short-circuit | Optimized anti-puncture electrode substrate |
| Transient Extreme Tolerance | 0℃ ~ 60℃ only | -40℃ ~ 85℃ short-term workable |
| Self-Discharge Rate | High, big power loss after months storage | Low LSD formula for long standby |
Our 4 Proprietary Technical Breakthroughs (Factory R&D Core)
- Anti-freeze composite electrolyte: Special low-temperature active agent eliminates crystallization under sub-zero environment
- High-temperature thermal stabilizer: Suppress electrolyte decomposition, slow electrode aging under long high-heat storage
- Upgraded negative substrate: Abandon fragile copper mesh to reduce self-discharge and internal short-circuit risks
- Full sealing vibration-resistant process: Adapt bumpy vehicle and field outdoor working conditions
3 T-BOX Backup Power Solution Comparison (Auto Industry Focus)
Vehicle T-BOX telematics units need safe long-standby backup power after main power cut. Compare 3 mainstream technical routes based on vehicle factory real demands:
| Performance Point | Weijiang 3.6V AAA600 Ni-MH Pack | Lithium Ion Cell | Supercapacitor |
|---|---|---|---|
| Thermal Runaway Risk | Zero risk, water-based electrolyte | High risk above 60℃ cabin temp | No risk, low energy storage |
| -20℃ Low Temp Output | Stable flat voltage | Sharp voltage collapse | Only short power supply |
| Continuous GPS/eCall Support | 5~30 mins full data storage | 3~12 mins limited runtime | ＜2 mins only |
| Vibration Resistance For Vehicles | Sealed integrated pack design | Internal wiring loose risk | Stable but high unit cost |
| Mass Production Cost | Medium, low maintenance cost | High, rapid aging | Highest single unit price |
4 Harsh Environment Mass Application Cases
4.1 Automotive T-BOX & Telematics Terminals
Custom 3.6V series-parallel NiMH packs serve as mandatory backup power for intelligent connected vehicles, enduring -20℃ winter parking and 60℃ closed car cabin heat without data loss of positioning and fault logs.
4.2 Polar & Field Geological Exploration Equipment
-40℃ stable discharge design fits unmanned monitoring sensors; non-toxic raw materials comply with polar environmental protection standards, reducing frequent battery replacement for field teams.
4.3 Desert Off-Grid Solar Storage Systems
Adapt huge day-night temperature difference up to 60℃; long cycle life cuts field maintenance frequency for remote monitoring cameras and solar garden lights.
4.4 Cold Region Outdoor Communication Base Stations
Low self-discharge characteristic supports months of standby, compatible with remote battery status BMS upload modules for unattended signal towers.
4.5 Industrial IoT & Portable Inspection Instruments
Continuous stable low-current output for workshop high-temperature detection devices and outdoor water/soil monitoring equipment all year round.
5 Weijiang Factory Core Advantages & Custom Capacity
5.1 Manufacturing & R&D Strength
- Independent electrolyte & electrode R&D lab, all wide-temperature formulas self-developed without third-party outsourcing
- Full production line from electrode winding, sealing to pack assembly, strict 6-stage incoming & finished product inspection
- Complete reliability test workshop: vibration, drop, thermal shock, double 85 humidity-heat aging, short-circuit extrusion test equipment
- Monthly mass output over 5 million standard cells, flexible MOQ: small batch prototype samples & large OEM mass orders supported
5.2 Full OEM & ODM Custom Service
- Cell combination: Custom series/parallel layout to reach target voltage (1.2V/2.4V/3.6V/4.8V etc.)
- Hardware customization: Wire length, JST/Molex/DC terminals, NTC temperature wire, L-shaped/flat irregular pack housings
- Support matched wide-temperature BMS protection board for high-capacity combined packs
- Custom shell printing: Print "NIMH BATTERY" or customer brand logo on outer sleeve
- Supply full official datasheets, test reports and certification files for overseas bidding & customs clearance
5.3 Global Complete Certifications
All wide-temperature Ni-MH series pass CE, RoHS, REACH, UN38.3, UL1973, GB/T31485; full test records including 150℃ thermal shock, 480h double 85 aging, drop & vibration tests provided upon request.
6 Daily Operation & Maintenance Tips
- Test internal resistance, open-circuit voltage and self-discharge data every 3 months to predict capacity attenuation trend
- Avoid long-time full-load discharge under ambient temperature higher than 65℃
- Add heat insulation housing if equipment is installed in extreme hot/cold outdoor areas
- Carry out balanced charging once every 6 months for series-parallel combined battery packs
Request Wide Temp Ni-MH Datasheets & Free Test Samples
Share your equipment type, working temperature range, required voltage/capacity and internal installation size limit. Our automotive & industrial battery R&D team will send targeted technical solution and factory direct quotation within 24 hours.
WhatsApp: +8615089431104
Business Mail:Service@wejiangpower.com