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| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Manufacturer | LG Energy Solution | Model | INR21700M50LT |
| Cell Type | Cylindrical rechargeable lithium-ion cell | Cell Format | 21700 |
| Nominal Voltage | 3.69V | Capacity Basis | 4800mAh (datasheet 1C basis) |
| Nominal Energy | 18.2Wh | Minimum Energy | 17.6Wh |
| Charge Voltage | 4.20V for capacity measurement | Discharge Cut-Off | 2.50V for capacity measurement |
| Standard Charge | CC-CV, 1.44A to 4.20V, 50mA cut-off at 25°C | Standard Discharge | 0.96A to 2.50V at 25°C |
| Maximum Charge Current | 1.44A at 0–10°C; 2.40A at 10–25°C; 3.36A at 25–45°C ambient | Maximum Discharge Current | 1.44A at −30 to −20°C; 9.6A at −20 to 10°C; 14.4A at 10–25°C; 9.6A at 25–55°C ambient |
| Initial AC Impedance | 15 ± 6mΩ at 1kHz in shipping state | Initial DC Impedance | 23 ± 6mΩ at 50% SOC, 0.5C for 10s at 25°C |
| Dimensions | Diameter ≤21.44mm; height ≤70.65mm | Weight | 67.5 ± 1.0g with tube and washer |
| Operating Temperature | Charge: 0–45°C ambient; discharge: −30–55°C ambient | Shipping State | Below 30% SOC |
| Cycle-Life Examples | ≥75% energy at 500 cycles using 4.20–2.50V; ≥80% at 1000 cycles using specified reduced-voltage windows | Documented Safety Compliance | Cell satisfies UN38.3 |
The LG INR21700M50LT is an industrial 21700 rechargeable lithium-ion cell developed for protected LEV and EV battery packs. It combines 3.69V nominal voltage, an 18.2Wh nominal energy rating and a 4800mAh capacity basis with temperature-dependent discharge capability up to 14.4A. The cell is intended exclusively for qualified battery packers, OEMs and system integrators—not for standalone or consumer-replaceable use.
The M50LT uses a 4800mAh capacity basis and is rated at 18.2Wh nominal energy, with 17.6Wh specified as the minimum initial energy. Its 3.69V nominal voltage supports series and parallel pack architectures where runtime, pack volume and dependable energy delivery must be balanced for professional mobility systems.
With a maximum diameter of 21.44mm, maximum height of 70.65mm and weight of 67.5 ± 1.0g, this cylindrical cell offers a practical energy-to-volume profile for modular battery assemblies. Actual production dimensions, holders, insulation components and welding clearances should be confirmed during mechanical pack validation.
Maximum full-discharge current reaches 14.4A between 10°C and 25°C, while lower limits apply outside that range. This is an allowable maximum rather than a continuous-performance guarantee. Pack controls must reduce or interrupt current according to cell voltage and temperature because sustained maximum-current use can accelerate degradation.
Standard charging uses a 1.44A constant-current stage followed by constant voltage at 4.20V, ending when current falls to 50mA at 25°C. Maximum complete-charge current ranges from 1.44A to 3.36A according to ambient temperature, requiring a dedicated charger and coordinated BMS temperature supervision.
Initial AC impedance is specified at 15 ± 6mΩ when measured at 1kHz in the shipping state. Initial DC impedance is 23 ± 6mΩ at 50% SOC under a 0.5C, 10-second load at 25°C. These documented conditions help engineers compare cells consistently and model pack-level voltage drop and heat generation.
The specification reports at least 75% first-cycle energy after 500 cycles using a 4.20–2.50V test window. Two reduced-voltage profiles specify at least 80% after 1000 cycles. These results are condition-specific rather than universal service-life guarantees, allowing integrators to evaluate the trade-off between accessible energy and longevity.
Custom battery pack applications: Subject to LG Energy Solution approval and pack-level validation, the INR21700M50LT is intended for protected LEV and EV systems. MisenBattery supplies cells to qualified battery packers, OEMs and system integrators and supports custom pack development with a matched BMS, fuse protection, welded interconnects, cell-level sensing, insulation, spacing, thermal management and mechanical restraint. Direct soldering, consumer handling and standalone or removable-cell use are prohibited. Supporting CE, UN38.3, RoHS and UL documentation can be provided when available for the applicable cell, completed battery pack and shipment; the supplied document specifically states that the cell satisfies UN38.3 and is a promotional, non-final specification.
