Frequently Asked Questions
Q1: What are the voltage and capacity of this D-size NiMH battery?
A: This is a D-size cylindrical nickel-metal hydride (NiMH) rechargeable battery, nominal 1.2V, rated capacity 10000mAh. It replaces disposable D (LR20/AM-1) cells in compatible devices.
Q2: What is this D-size 10000mAh NiMH battery used for?
A: The 10000mAh D cell provides very long runtime for high-drain devices—large flashlights, boomboxes, motorized toys, emergency lights and industrial equipment—reducing recharge frequency.
Q3: How do I charge this large NiMH cell?
A: Use a NiMH/NiCd charger that accepts D-size cells at about 0.1C for 14-16 hours, or a smart charger with -dV/dt and temperature cut-off for faster charging. Do not use a Li-ion-only charger.
Q4: What is the cycle life and can cells be assembled into packs?
A: Expect 500-1000 cycles under IEC-standard conditions. We can weld cells into custom multi-cell packs with tabs, wires, connectors and PCM/BMS for higher-voltage applications.
Q5: Can you customize these batteries with tabs, wires, connectors or private label?
A: Yes. As the OEM/ODM factory we can add nickel solder tabs, lead wires and connectors, match and balance cells, add PCM/BMS protection for packs, and customize PVC heat-shrink colour and printing, retail blister cards and private-label branding on our large NiMH cells and packs. Contact us with your requirements for a quotation.
Q6: What certifications, MOQ and lead time apply?
A: CE, RoHS, REACH, MSDS/SDS, UN38.3 and IEC 62133 documentation are available for export shipment. Standard cells MOQ starts from 100 pcs; custom pack and label MOQ is flexible. We quote within 24 hours, supply samples for evaluation, and mass production is typically ready in about 15 days.
Full Technical Specifications (WJ‑H‑D10000)
| Parameter Item |
Specification |
| Model Number |
WJ‑H‑D10000 |
| Nominal Voltage |
1.2V per cell |
| Rated Capacity |
10000mAh (Minimum 9800mAh) |
| Cell Size |
D‑size (R20) Cylindrical Ni‑MH, pointed top |
| Dimension (D×H) |
Φ32.5mm × 62.0mm |
| Weight |
Approx 156.0g |
| Internal Resistance (1kHz, fully charged) |
≤ 30 mΩ |
| IEC Cycle Life |
≥400 cycles (IEC61951‑2:2017) |
| Max Continuous Discharge Current |
10000mA (1C) |
| Standard Charge |
1000mA (0.1C), 16 hours |
| Fast Charge |
2000mA‑3000mA with ‑ΔV / temperature cut‑off control |
| Discharge Temperature Range |
-20℃ ~ +55℃ |
| Short‑term Storage Temperature (<30 days) |
-20℃ ~ +55℃ |
| Cut‑off Discharge Voltage |
1.0V/cell |
| 28‑day Self‑discharge Retention |
≥60% capacity @20℃ |
| Certifications |
PPWR,CE, RoHS, REACH, MSDS, UN38.3 documents available |
Core Performance Advantages
- ≥400 IEC‑standard cycles: Complies with IEC61951‑2‑2017 cycle test for high‑current industrial equipment.
- High‑capacity D‑size form factor: Large‑capacity 10000mAh D‑size (R20) cell with pointed‑top terminal for welding requirements.
- Ultra‑low internal resistance ≤30mΩ: Excellent high‑rate discharge performance, supports up to 10A continuous discharge.
- Wide operating temperature: Discharge range from‑20℃ up to +55℃, work for indoor and harsh outdoor equipment.
- Verified safety performance: Pass over‑charge, over‑discharge, short‑circuit, vibration and drop reliability tests.
- Tab welding available: Factory direct spot‑weld tabs, flying leads, custom battery packs for OEM project requirements.
Performance Characteristic Curves
1.0C Rate Charging Curves
0.1C‑1.0C Multi‑Rate Charging Curves
0.2C / 0.5C / 1C Discharging Curves
Storage & Self‑Discharge Retention Curves
OEM Custom Battery‑Pack Service
We offer OEM & ODM custom assembly service based on WJ‑H‑D10000 high‑capacity D‑size Ni‑MH cells. Series‑parallel combination, spot‑weld metal tabs, heavy‑gauge flying leads, assorted high‑current connectors and plastic / heat‑shrink housing can be customized for high‑power device projects.
Typical Application Scenarios
The high‑capacity D‑size 10000mAh nickel‑metal hydride cell is widely used for high‑current industrial equipment, mining lamps, portable power supplies and heavy‑duty standby systems.
Mining head lamps Portable high‑power equipment Gas ignition devices Large emergency lighting Industrial standby power units High‑current custom battery packs
Frequently Asked Questions
Q1: What is cycle‑life of 1.2V D‑size 10000mAh Ni‑MH battery?
A: ≥400 cycles tested according to IEC61951‑2‑2017 standard under 0.2C charge‑discharge test conditions.
Q2: What is internal resistance for this D‑size Ni‑MH cell?
A: ≤30mΩ when fully‑charged, measured under 1KHz AC condition.
Q3: Can you weld tabs and make custom packs for WJ‑H‑D10000 cells?
A: Yes, we support spot welding tabs, lead wires, connectors and custom battery pack assembly for OEM projects.
Q4: What export certificates are available for D‑size Ni‑MH cells?
A: PPWR, CE, RoHS, REACH and MSDS, UN38.3 documents can be provided for overseas shipment.
Q5: Can I get samples of 1.2V D‑size 10000mAh nickel metal hydride cell?
A: Samples are available for customer performance verification, buyer needs to bear the shipping cost.
Manufacturer & Certification Support
Weijiang Power manufactures WJ‑H‑D10000 high‑capacity D‑size Ni‑MH rechargeable cells. Automatic production lines and in‑house reliability lab support mass‑order and small‑batch OEM customization. Full set export‑ready documents for global customers.
Need Quotation or Test Samples for 1.2V D‑size 10000mAh Ni‑MH Battery?
Contact us for bulk price, tab‑welded cell options, OEM pack solution and download official technical datasheet.
