Short Description
Maximize runtime with the LG INR21700 M50LT, a high-capacity 5000mAh 21700 cell engineered for devices that value endurance over extreme current. This 4-pack delivers a steady 7.3A continuous discharge, making it the ideal power source for solar garden lights, LED flashlights, wireless security cameras, portable fans, and other low-to-medium drain electronics. The flat top design ensures broad compatibility with spring-loaded devices and allows easy spot-welding for custom battery packs. With excellent cycle life and LG’s renowned quality, the M50LT keeps your devices running longer between charges — perfect for off-grid setups and everyday essentials.
Key Features
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5000mAh High Capacity – One of the highest capacities available in the 21700 form factor, providing extended runtime for energy-hungry devices that don’t require massive current.
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7.3A Continuous Discharge – Safely powers most single-cell flashlights, cameras, fans, and solar lighting applications without overheating or voltage sag.
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Flat Top Design – Compatible with all standard 21700 spring-contact chargers, battery holders, and flashlights; flat positive terminal is ideal for spot-welding nickel strips.
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Long Cycle Life – Retains over 80% of its initial capacity after 500 charge/discharge cycles under recommended conditions, reducing long-term replacement costs.
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LG Quality & Reliability – Manufactured by one of the world’s leading lithium-ion cell producers, ensuring consistent performance and built-in safety features.
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4-Pack Convenience – Perfect for building or refreshing battery packs in solar lights, security cameras, or portable power banks.
Parameters
Applications
Recommended For
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Solar Garden Lights & Energy Storage: Low-current long-duration use; one cell can power a bright LED for an entire night.
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LED Flashlights & Headlamps: Perfect for medium to high modes drawing 1–5A; 5000mAh allows exceptionally long runtime.
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Wireless Security Cameras & Doorbells: Ultra-low standby consumption with occasional recording spikes well within 7.3A.
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Portable Fans & Humidifiers: Constant 1–3A draw with the benefit of running all day or night on a single charge.
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IoT Devices & Environmental Sensors: Remote battery-powered nodes that need months of operation without maintenance.
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Medical Devices & Backup Systems: Reliable, stable power for patient monitors and small UPS applications.
Not Recommended For
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High-drain devices: Power tools (drills, saws), sub-ohm vaping, and RC models require 15A+ continuous — choose high-drain 21700 cells instead.
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Extreme turbo flashlights: If your light draws over 7A on maximum, the voltage sag may cause reduced brightness; use a higher-rate cell.
FAQ
Q: Is the discharge current really only 7.3A? I’ve seen 14.4A listed elsewhere.
A: Yes, the official LG datasheet for the M50LT specifies a maximum continuous discharge of 7.3A. Any listing showing 14.4A is incorrect and may refer to a different model or a misinterpretation. Using this cell above 7.3A can lead to overheating and permanent damage.
Q: Can I use this battery for vaping or power tools?
A: No. These applications typically require 15A or more. The M50LT is designed for capacity, not high current. For such uses, select a dedicated high-drain 21700 cell like the Molicel P42A or Samsung 40T.
Q: Will this fit in my 21700 flashlight?
A: As long as your flashlight accepts flat top 21700 cells, yes. The M50LT has standard dimensions (21.2mm x 70.3mm). Always verify your device’s battery specifications.
Q: How should I charge these cells?
A: Use a quality lithium-ion charger with CC-CV algorithm. Charging at 0.5C (2.5A) gives a good balance between speed and cell longevity. Avoid chargers without proper voltage cut-off.
Q: How should I store them long-term?
A: Store at 3.6–3.7V (roughly 40–50% charge) in a cool, dry place inside a non-conductive case. Do not store fully charged or empty for extended periods.
