Description
Experience the best of both worlds with the Sunpower 2-pack 18650 3000mAh 30A flat top batteries. Engineered for users who refuse to choose between high discharge and long runtime, these high-drain lithium-ion cells deliver a true 30A continuous output while retaining a generous 3000mAh capacity. Whether you’re pushing a turbo flashlight to its limits, driving a sub-ohm build, or relying on a headlamp for an all-night adventure, these batteries provide sag-free voltage and lasting stamina. The flat top design ensures a perfect fit in multi-cell packs and flat-contact devices. Without a protection circuit, they demand responsible handling: always pair with a smart Li-ion charger and a device or circuit that enforces low-voltage cut-off. Recharge over 500 times, leave disposable cells behind, and power your most demanding gear with Sunpower.
Key Features
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30A Continuous High Drain – Delivers a genuine 30A constant current with minimal voltage sag, keeping turbo/strobe modes blindingly bright and your builds hitting hard.
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Generous 3000mAh Capacity – Remarkable capacity for a high-discharge cell, offering extended runtime in flashlights, headlamps, and personal fans without compromising power delivery.
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Flat Top Terminal – Standard flat positive for battery packs, multi-cell sleds, and flat-contact equipment. Check device compatibility: some single-cell flashlights require button tops.
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Rechargeable & Cost-Effective – Rated for ≥500 cycles, replacing hundreds of disposables. Zero memory effect – top up anytime without harming lifespan.
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Unprotected Cell – For Knowledgeable Users – These are bare cells without a PCB. You must use a Li-ion smart charger and a device with built-in over-discharge protection (or add a protection board). Never over-discharge below 2.5V, and never leave charging unattended.
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Optimized Form Factor – Standard 18650 dimensions (18.3 mm x 65.0 mm). Lightweight at approximately 48 g each, suitable for portable and compact builds.
Parameters
Applications
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Turbo Flashlights & Searchlights – Built for high-lumen EDC torches, tactical lights, and multi-emitter throwers that demand 30A to sustain full turbo mode without stepping down.
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High-Output Headlamps – Powers caving, industrial, and professional headlamps that need high brightness for extended periods.
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Desk Fans & Portable Fans – Enjoy longer runtime on personal desk fans or clip-on fans, thanks to the 3000mAh capacity, with instant motor starts every time.
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RC Toys & Power Tool Packs – Perfect for building high-drain 2S/3S packs for RC vehicles, drones, and cordless tools that require both amperage and capacity.
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Backup & DIY Electronics – Reliable cells for solar lights, IoT devices, robotics, and high-current Arduino projects.
FAQ
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Q: Can a 3000mAh 30A cell really deliver both high capacity and high current?
A: Yes, these Sunpower cells use an advanced chemical formulation that balances energy density with high-rate capability. The 3000mAh capacity is measured at a 0.2C discharge; under a continuous 30A load, the usable capacity will be slightly lower, which is normal for all high-drain cells.
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Q: Are these batteries protected?
A: No. They are unprotected flat top cells. You must use a smart Li-ion charger and a device that cuts off at 2.5V to prevent over-discharge. If your device does not have low-voltage protection, install an external protection board.
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Q: Will a 30A battery damage my desk fan or headlamp?
A: Absolutely not. Devices draw only the current they need. The 30A rating is the maximum safe output, making these batteries perfectly safe and long-lasting in low-drain electronics.
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Q: Flat top vs. button top – will these fit my flashlight?
A: Flat tops fit most multi-cell flashlights, battery carriers, and flat-contact devices. If your flashlight uses a physical reverse-polarity ring that requires a button top, flat tops may not reach the positive contact. Use magnet spacers only with extreme caution and proper insulation.
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Q: How should I store these cells?
A: Store at about 3.7V in a cool, dry location. Recharge every 6 months. Always carry in non-conductive cases—never loose with keys or coins.
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Q: What charger should I use?
A: A dedicated Li-ion charger for 3.7V 18650 batteries (e.g., Nitecore, XTAR). Never use a NiMH/NiCd charger.
