Ultra High Capacity 9000mAh D Cell, 1.2V Rechargeable Ni-MH for Boombox / Emergency Light
Ultra High Capacity 9000mAh D Cell, 1.2V Rechargeable Ni-MH for Boombox / Emergency Light
Features
- Extremely High Capacity: At 9000mAh, this represents one of the highest capacity levels available for a consumer D-size rechargeable cell, enabling exceptionally long device runtimes.
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Robust and Safe Chemistry: Ni-MH is inherently stable, resistant to thermal runaway, and contains no toxic cadmium (unlike Ni-Cd), making it an environmentally preferable choice.
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Excellent High-Current Performance: Capable of delivering high continuous and pulse currents, supporting demanding applications like powerful flashlights or motorized tools.
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Wide Temperature Operation: Performs reliably in a broad range of environmental conditions.
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Minimal Memory Effect: Modern Ni-MH cells exhibit very little memory effect, allowing for flexible charging patterns without significant capacity loss.
Specification
| Nominal Voltage | 1.2 V |
| Nominal Capacity | 9000mAh |
| Dimensions | 34.2 x 61.5 mm |
| Standard Charge Current | 0.1C (900 mA) |
| Discharge Cut-off Voltage | 1.0 V |
| Maximum Discharging Current | 3C (27 A) |
| Internal Resistance | ≤ 10 mΩ |
| Operating Temperature |
Charging: 0°C to +45°C Discharging: -20°C to +60°C |
| Storage Teerature | -20℃~35℃ |
| Cycle Life | ≥ 500 cycles |
Applications
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High-Performance Portable Lighting: Powerful LED lanterns, searchlights, and professional photography flash units.
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High-Drain Electronic Devices: Large portable speakers/boomboxes, heavy-duty motorized toys, and robotics.
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Backup & Emergency Power: Emergency lighting systems, backup devices for camping or field use.
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Professional & DIY Use: Wherever long-lasting, rechargeable D-cell power is required.
Warnings & Precautions
Charging
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Use a Smart Ni-MH Charger: Always use a charger specifically designed for Ni-MH chemistry that features -ΔV (negative delta voltage) detection and temperature monitoring. This is critical to prevent overcharging.
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Avoid Continuous Trickle Charging: Do not leave these high-capacity cells on a simple, indefinite trickle charger after they are full, as this can cause damage over time.
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Charge in a Safe Environment: Charge in a well-ventilated area on a non-flammable surface.
Discharging
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Avoid Deep Discharge: While more tolerant than some chemistries, consistently discharging below 1.0V per cell will shorten lifespan. Use devices with proper low-voltage warnings or cut-offs.
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Allow Cooling: After heavy use (high current discharge), let the cell cool to near room temperature before recharging.
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Use in Matched Sets: When using multiple cells in a device, ensure they are of the same brand, model, age, and charge state to prevent imbalance.
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Optimal Storage Charge: For long-term storage (>1 month), store cells at a 40-60% state of charge (open-circuit voltage ~1.25V - 1.30V).
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Physical Care: Do not puncture, crush, deform, or incinerate the cell. Do not remove the outer label.
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Keep Terminals Clean: Ensure positive and negative terminals are clean and free of debris for good electrical contact.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.