Description
18670A 4500mAh NiMH Battery Product Attributes
Key Features:
Rechargeable 18670A Ni-MH cylindrical cell with 1.2V nominal voltage and 4500mAh nominal capacity.
18670A cell size with 18.5mm diameter and 67.0mm height with tube.
Standard charging condition is 440mA, 0.1C, for 16 hours at 20±5℃.
Quick charge supports 2200mA, 0.5C, for approximately 2.4 hours at 10–40℃ with -ΔV=5mV/cell control.
Standard discharge is 880mA, 0.2C, to 1.0V per cell at 20±5℃.
Maximum discharge current is specified up to 4400mA, 1C, with 0.7V/cell cut-off.
Recommended storage condition is -20℃ to 35℃ in low humidity and non-corrosive gas environments.
| Type | Description |
|---|---|
| Category | Ni-MH Batteries |
| Mfr | GMCELL |
| Series | GMCELL® |
| Part Status | Active |
| Battery Chemistry | Nickel Metal Hydride |
| Battery Type | Rechargeable Nickel Metal Hydride Cylindrical Cell |
| Model | GMCELL 18670A4500mAh |
| Specification | Ni-MH 18670A4500mAh 1.2V |
| Battery Configuration | Single 18670A NiMH cell, 1 × 1.2V |
| Voltage – Rated | 1.2 V |
| Nominal Capacity | 4500mAh under standard charge / discharge condition |
| Minimum Capacity | 4400mAh |
| Internal Resistance | ≤20mΩ within 1 hour after standard charge |
| Open Circuit Voltage | ≥1.25V within 1 hour after standard charge |
| Standard Charge | 440mA, 0.1C, 16 hours at 20±5℃ |
| Standard Charge / Discharge Test Condition | Charge: 440mA, 0.1C × 16 hours; discharge: 880mA, 0.2C to 1.0V/cell |
| Quick Charge | 2200mA, 0.5C, approx. 2.4 hours at 10–40℃, -ΔV=5mV/cell |
| Trickle Charge | 0.02C–0.05C at 0–40℃ |
| Standard Discharge | 880mA, 0.2C discharge to 1.0V/cell at 20±5℃ |
| Maximum Discharge Current | 4400mA, 1C, with 0.7V/cell cut-off |
| Low Rate Discharge | ≥300 minutes at 0.2C after standard charge and 1 hour rest |
| High Rate Discharge at 0.5C | ≥112 minutes at 0.5C after standard charge and 1 hour rest |
| High Rate Discharge at 1C | ≥51 minutes at 1C after standard charge and 1 hour rest |
| Charge Retention | ≥2640mAh, 60%, after 28 days at ambient temperature or 7 days at 45℃ |
| IEC Cycle Life Test | ≥300 cycles according to IEC 61951-2:2017 / 7.5.1.2 |
| Operating Temperature | Quick charge: 10–40℃; discharge: -20–60℃ |
| Recommended Temperature From Drawing | Standard charge: 20±5℃; fast charge: 10–40℃; discharge: -20–60℃; storage: -20–35℃ |
| Storage Temperature | Storage limit depends on duration: up to 1 year at -20–25℃, 6 months at -20–35℃, 1 month at -20–45℃, 1 week at -20–55℃ |
| Storage Recommendation | Store under -20℃ to 35℃, low humidity, and no corrosive gases; one charge/discharge cycle is needed after three months of storage |
| Dimensions | Diameter 18.5mm (+0/-0.7); height 67.0mm (+0/-1.0); top diameter 8.0mm; top height 0.6mm |
| Weight | Approx. 63.5g per cell |
| Overcharge Test | 0.1C charge for 48 hours; no leakage or deformation required |
| Short Circuit Test | Leakage and deformation may occur, but no explosion is allowed after standard charge short-circuit test at 20±5℃ |
| Vibration Resistance | Voltage change <0.02V/cell and internal resistance change <5mΩ/cell after vibration test |
| Impact Resistance | Voltage change <0.02V/cell and internal resistance change <5mΩ/cell after three 100cm drop tests |
| Leakage Test | No leakage or deformation after 14 days storage following standard charge |
| Safety Test | No disrupt, burst, or explosion after forced discharge test; electrolyte leakage and deformation are acceptable |
| Warranty | One-year limited warranty against workmanship and material defects |
| Electricity Retains Before Delivery | Normally not less than 50% before delivery unless otherwise confirmed by special requirement |
| Charging Method | Use the correct charger for Ni-MH batteries; do not reverse charge, short circuit, or solder directly to the cell |
| Replacement Checkpoints | Confirm voltage, capacity, 18670A cell dimensions, polarity, charging method, compartment fit, and storage condition before replacement or bulk supply |
| Shipping Info | Available for standard bulk supply or custom NiMH battery pack projects using 18670A 4500mAh cells |
