Description
2/3AA 400mAh NiMH Battery Product Attributes
Key Features:
1. Rechargeable 2/3AA Ni-MH cylindrical cell with 1.2V nominal voltage and 400mAh nominal capacity.
2. Compact 2/3AA cell size with 14.5mm diameter and 29.0mm height with tube.
3. Standard charging condition is 40mA, 0.1C, for 16 hours at 20±5℃.
4. Quick charge supports 200mA, 0.5C, for approximately 2.4 hours at 10–40℃ with -ΔV=5mV/cell control.
5. Standard discharge is 80mA, 0.2C, to 1.0V per cell at 20±5℃.
6. Maximum discharge current is specified up to 2000mA, 5C, with 0.7V/cell cut-off.
7. 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 28AA400mAh×1 |
| Specification | Ni-MH 2/3AA400mAh 1.2V |
| Battery Configuration | Single 2/3AA NiMH cell, 1 × 1.2V |
| Voltage – Rated | 1.2 V |
| Nominal Capacity | 400mAh under standard charge / discharge condition |
| Minimum Capacity | 400mAh |
| Internal Resistance | ≤70mΩ within 1 hour after standard charge; specification drawing lists ≤50mΩ |
| Open Circuit Voltage | ≥1.25V within 1 hour after standard charge |
| Standard Charge | 40mA, 0.1C, 16 hours at 20±5℃ |
| Quick Charge | 200mA, 0.5C, approx. 2.4 hours at 10–40℃, -ΔV=5mV/cell |
| Trickle Charge | 0.02C–0.05C at 0–40℃ |
| Standard Discharge | 80mA, 0.2C discharge to 1.0V/cell at 20±5℃ |
| Maximum Discharge Current | 2000mA, 5C, with 0.7V/cell cut-off |
| Low Rate Discharge | ≥300 minutes at 0.2C after standard charge and 1 hour rest |
| High Rate Discharge | ≥112 minutes at 0.5C; ≥54 minutes at 1C; ≥9 minutes at 5C after standard charge and 1 hour rest |
| Charge Retention | ≥240mAh, 60%, after 28 days at ambient temperature or 7 days at 45℃ |
| IEC Cycle Life Test | ≥500 cycles according to IEC 61951-2:2017 / 7.5.1.2 |
| Operating Temperature | Fast charge: 10–40℃; discharge: -20–60℃ |
| Storage Temperature | Recommended -20–35℃; 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 14.5mm (+0/-0.7); height 29.0mm (+0/-1.0); top diameter 8.0mm; top height 0.6mm |
| Weight | Approx. 11.5g per cell; specification drawing lists about 10.5g |
| 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, 2/3AA 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 2/3AA 400mAh cells |
