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Rechargeable Ni-MH D-Cell Battery Pack, 3.6V High Capacity 8000mAh for Long Runtime

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ShenZhen ManLi Technology Co., LTD.

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Model Number : nimh D8000mAh

Place of Origin : China

MOQ : 1000PCS

Payment Terms : L/C,T/T,Western Union

Delivery Time : 35 working days

Packaging Details : Industrial Pakcage

Type : NIMH Battery packs

SIZE : D

Capacity : 8000mAh

Voltage : 3.6V

Standard Charge Current : 0.5C (4.0 A)

Discharge Cut-off Voltage : 3.0 V

Self-Discharge Rate : ~15-20% per month

Cycle Life : ≥ 500 cycles

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Features

High Capacity & Long Runtime: The large D-cell format provides an exceptional energy reserve (8.0Ah), enabling extended operation for power-hungry devices.
Inherently Safe & Stable Chemistry: Ni-MH chemistry is more resistant to thermal runaway compared to lithium-based batteries and does not require a complex Battery Management System , making it a robust and safe choice.
Excellent High-Current Performance: Capable of delivering high continuous and pulse discharge currents, suitable for applications with motor starts or other high inrush loads.
Wide Operating Temperature Range: Performs reliably in a broad range of environments, from -20°C to 60°C.

Specification

Nominal Voltage	3.6 V
Nominal Capacity	8000mAh
Standard Charge	0.5C (4.0 A)
Discharge Cut-off Voltage	3.0 V
Maximum Discharging Current	2C (16 A)
Operating Temperature	Charging: 0°C to +45°C Discharging: -20°C to +60°C
Storage Teerature	-20℃~35℃
Internal Resistance	≤ 15 mΩ
Cycle Life	≥ 500 cycles

Rechargeable Ni-MH D-Cell Battery Pack, 3.6V High Capacity 8000mAh for Long Runtime

High-Powered Portable Electronics: Professional portable lighting, powerful boomboxes, large portable fans.
Toys & Hobbyist Models: High-performance radio-controlled (RC) vehicles (cars, boats), large-scale model robotics.
Emergency & Backup Systems: Emergency lighting units, backup power for security/alarm panels.
Professional Tools: Certain cordless tools where safety and durability are prioritized over extreme energy density.

Use a Ni-MH Specific Charger: Always use a smart charger designed for Ni-MH chemistry that features -ΔV (negative delta voltage) detection and temperature monitoring to correctly terminate the charge. Never use a Ni-Cd (nickel-cadmium) only charger.
Avoid Continuous Trickle Charging: Modern high-capacity Ni-MH cells are not designed for indefinite trickle charging. This can lead to overcharge and damage. If a maintenance charge is needed, use a very low current (< C/50) and a timer.
Charge in a Safe Area: Charge in a well-ventilated area on a non-flammable surface.

Prevent Deep Discharge: Never discharge the pack below 3.0V under load. Allowing individual cells to reverse polarity can cause permanent damage.
Current Limits: Adhere to the maximum continuous discharge rating. While the pack can handle high pulses, sustained over-current will cause excessive heat and shorten lifespan.
Allow Cooling: Let the battery cool to near ambient temperature after heavy use before recharging.

Storage

Optimal Storage State: For long-term storage (>1 month), condition the pack to a 40-60% state of charge (open-circuit voltage ~3.8V - 3.9V).
Cell Matching: When building or servicing the pack, ensure all cells are from the same manufacturer, model, and batch to ensure balanced performance.
Care: Do not puncture, crush, or disassemble the pack. Keep terminals clean and protected from short circuits.

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