Key Features
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True 30A Continuous Discharge – Engineered for the highest-drain applications: mechanical mods, impact drivers, and direct-drive flashlights.
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Ultra-Low Internal Resistance (≈13mΩ) – Minimizes heat, maximizes power delivery, and keeps your device performing at its peak.
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2100mAh Optimized Capacity – Sacrifices raw capacity for extreme current capability and exceptional cycle stability under load.
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Genuine Sony/Murata Cell – 100% authentic, manufactured to the strictest Japanese quality standards for consistency and safety.
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Flat Top Design – Perfect for spring-contact devices and DIY pack builders. Flat surface ensures reliable spot-welding.
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Unprotected Cell – Allows unrestricted current flow; always pair with a BMS when building multi-cell packs.
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10-Pack Value – Ideal for building high-current packs, stocking your or keeping spares for demanding gear.
Parameters
Applications
Recommended For (Peak Power Demands)
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Cordless Power Tools: Impact drivers, drills, circular saws – perfect for rebuilding packs.
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RC Models: 1/10 scale cars, trucks, boats, and quadcopters requiring high burst current.
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High-Output Flashlights: FET-driven or multi-emitter hot-rod lights demanding 30A+.
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Airsoft AEGs: High rate-of-fire electric guns.
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DIY Battery Packs: Spot welders, portable power stations, and custom high-current applications.
Not Recommended For
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Long-runtime, low-drain devices (camping lanterns, solar lights, clocks) – choose 3500mAh cells.
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Standard USB power banks – capacity is too low and performance is wasted.
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Devices requiring button top cells (use a magnetic spacer if needed).
FAQ
Q: Is 2100mAh enough? Why not a higher capacity cell?
A: The VTC4 prioritizes current delivery over capacity. Its 2100mAh is the trade-off for a true 30A rating and ultra-low internal resistance. In high-drain devices, consistent power under load matters far more than a few hundred extra milliampere-hours. If your application draws under 10A and you need maximum runtime, switch to a high-capacity 3500mAh cell.
Q: Are these genuine Sony cells?
A: Yes. We source directly from authorized distributors. Every cell is a genuine Sony/Murata US18650VTC4. Beware of counterfeit cells sold online; we guarantee authenticity.
Q: Can I rebuild a cordless drill battery with these?
A: Yes, the VTC4 is excellent for high-torque tools. All cells must be matched for voltage and internal resistance. Spot-weld nickel strips – never solder directly to the cell – and install a BMS rated for at least 40A.
Q: How should I store and maintain them?
A: Store in a cool, dry place at around 3.6-3.7V (40% state of charge). Use a quality CC-CV lithium-ion charger. After heavy use, allow cells to cool before recharging. Never store fully charged or discharged for long periods.
