Description
Get more current from your high-capacity cell with the Vapcell S50, a 21700 battery that combines a solid 5000mAh capacity with an enhanced 15A continuous discharge. This 2-pack delivers approximately 43% more energy than a standard 3500mAh 18650, while the 15A CDR provides 50% more current headroom than typical 10A high-capacity cells. Ideal for high-output LED flashlights, fast-charging USB power banks, solar energy storage, and e-bike range extender packs. The flat top design ensures universal compatibility with spring-loaded contacts and simplifies spot-welding for custom battery packs. With excellent cycle life and Vapcell's trusted cell matching, the S50 keeps your devices running longer with the power to handle demanding modes.
Key Features
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5000mAh High Capacity – Provides approximately 43% more energy than a standard 3500mAh 18650 cell. Extended runtime for devices where frequent charging is inconvenient.
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15A Continuous Discharge (CDR) – Delivers 50% more current than typical 10A high-capacity cells. Handles fast-charging power banks, bright flashlight turbo modes, and moderate e-bike loads without overheating.
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Flat Top Design – Universally compatible with all standard 21700 spring-contact chargers, flashlights, and battery trays. The flat terminal is ideal for spot-welding nickel strips in custom battery packs.
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Long Cycle Life – Retains over 80% of initial capacity after 500 charge/discharge cycles under recommended conditions, reducing long-term replacement costs.
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2-Pack Convenience – Build a 10000mAh power bank with two cells in parallel, keep a spare for your flashlight, or start your solar storage project.
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Vapcell Quality Control – Each cell is tested and matched for consistent capacity and low internal resistance, ensuring reliable performance across the pack.
Parameters
Applications
Recommended For
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High-Output 21700 LED Flashlights: The 15A CDR provides ample headroom for turbo modes that would push 10A cells to their limit. Enjoy bright, consistent illumination with the endurance of 5000mAh capacity.
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High-Capacity USB Power Banks: Build a 10000mAh power bank with two cells in parallel. The 15A rating comfortably supports 45W–65W USB-C PD fast charging for laptops and smartphones.
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Solar Energy Storage & Off-Grid Systems: Low-current, long-duration energy storage. The 5000mAh capacity per cell builds substantial energy reserves for solar light banks and small off-grid setups.
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E-Bike Range Extender Packs: In multi-parallel configurations with a proper BMS, the 15A per cell supports 250W–500W motors. The 5000mAh capacity provides solid range.
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DIY Battery Projects & Portable Power Stations: Ideal for custom packs where balanced capacity and enhanced current capability are both needed.
Not Recommended For
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High-Power Vaping / Mechanical Mods (>15A): These require 20–35A continuous. Use Vapcell T42 (35A) or K40 (30A) instead.
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Heavy-Duty Cordless Power Tools: Angle grinders and circular saws demand 20–40A continuous. Use dedicated high-drain cells.
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RC Cars, Drones & High-Drain Models: These require 20–30A+ continuous current.
FAQ
Q: How does the S50 compare to other 5000mAh cells like the Samsung 50G?
A: The S50 offers a 15A CDR, which is approximately 50% more current capability than the Samsung 50G (9.8A CDR). If your device draws more than 10A—such as a fast-charging power bank or a high-mode flashlight—the S50 will deliver more stable voltage and run cooler than a 10A-limited cell.
Q: Is this battery suitable for vaping or power tools?
A: No. Vaping devices and power tools require high continuous currents (typically 20–40A). The S50's CDR is 15A. Using it in such devices will cause severe voltage sag, rapid overheating, and potential battery damage. Use Vapcell T42 or K40 for those applications.
Q: Can I build an e-bike battery with these?
A: Yes, but only in a multi-parallel configuration. A single S50 cannot provide enough current for most e-bike motors. Use at least a 3P or 4P configuration so each cell stays within 15A. Always use matched cells, spot-welded nickel strips, and a properly rated BMS.
Q: What devices benefit most from the 15A CDR?
A: Any device that needs more current than a standard 10A high-capacity cell can comfortably provide: high-mode 21700 flashlights, 45W+ USB-C power banks, and multi-cell e-bike packs where higher per-cell current reduces the number of parallel strings needed.
Q: How should I store these cells when not in use?
A: Store at 3.6–3.7V (approximately 40–50% charge) in a cool, dry place. Use non-conductive battery cases to prevent accidental short circuits. Avoid storing fully charged or deeply discharged for extended periods.
