7.2V SC3000mAh Flat Top Ni-MH High Power Battery Packs with JST Connector
The 7.2V SC3000mAh Ni-MH battery pack is a heavy-duty industrial secondary pack constructed from six series-connected Sub-C (SC) flat-top nickel-metal hydride cells. Delivering 21.6Wh of nominal energy, it supports continuous 10C discharge (30A) and peak 15C bursts (45A) with an internal resistance ≤18 mΩ. Engineered for remote control vehicles, automated starter packs, emergency lighting, and extreme-temperature equipment (-20°C to +65°C), it requires no complex electronic BMS and avoids hazardous materials transport restrictions.
1. 7.2V Sub-C 3000mAh Ni-MH Engineering Specification Matrix
While lithium chemistries dominate portable consumer devices, industrial Ni-MH remains the premier choice where intrinsic electrochemical safety, zero thermal runaway, and unrestricted air shipping are mandatory.
| Engineering Property | Specification Value | Verification & Test Standard |
|---|---|---|
| Battery System & Configuration | 6S1P (6× Sub-C Flat-Top Cells) | Nickel-Metal Hydride (Ni-MH) chemistry |
| Nominal Voltage & Energy | 7.20 V (1.2V per cell) | 21.6 Wh | Working plateau: 6.0V to 8.7V |
| Nominal Rated Capacity | 3,000 mAh (3.0 Ah) | 0.2C discharge to 6.0V cutoff @ 20°C |
| Continuous Discharge Current | 10C (30.0 Amperes continuous) | Voltage maintains ≥ 6.6V under load |
| Peak Pulse Current (5s) | 15C (45.0 Amperes burst) | Rapid motor stall recovery |
| Internal AC Impedance | ≤ 18 mΩ | 1 kHz AC test after full charge |
| Cycle Life Endurance | 500 – 1,000 Cycles | IEC 61951-2 endurance cycle protocol |
| Operating Temperature Range | Charge: 0°C to 45°C | Discharge: -20°C to 65°C | Aqueous alkaline electrolyte stability |
| Pack Dimensions & Weight | 135 × 47 × 24 mm | 350 ± 15 g | Stick / Side-by-side arrangement |
| Connector & Lead Wire | JST / Standard Tamiya with 14AWG silicone wire | Polarized high-current terminal |
2. Intrinsic Electrochemical Safety & Simplified Logistics
Unlike lithium batteries that require strict UN 3480 / UN 3481 Class 9 Dangerous Goods compliance and State of Charge (SoC) transport limitations ≤30%, Ni-MH batteries utilize non-flammable aqueous potassium hydroxide (KOH) electrolyte. Under heavy mechanical penetration or overcharge abuse, cells vent harmless water vapor through resealable safety vents without catching fire, drastically reducing global shipping costs and warehouse regulatory burdens.
3. Frequently Asked Questions
How does Ni-MH -ΔV charge termination work?
Fast charging of Ni-MH cells is terminated by detecting the negative delta voltage (-ΔV) peak, typically set at 5mV to 10mV drop per cell, combined with temperature cutoff (ΔT/Δt ≥ 1°C/min) to prevent thermal overload.
Do modern GEB Ni-MH cells suffer from the “memory effect”?
No. Early Ni-Cd batteries suffered from severe memory effect due to cadmium crystalline growth. Modern GEB Ni-MH chemistries utilize advanced hydrogen-absorbing alloys and do not exhibit voltage depression from partial cycling.
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