Unleash serious power with the Vapcell T28, a top-tier 18650 high-drain cell engineered for demanding applications. This 2-pack delivers a true 25A continuous discharge with a 2800mAh capacity, making it the go-to choice for high-wattage cordless power tools, FET-driven flashlights, and RC models. Built on the renowned Molicel P28A platform, the T28 features ultra-low internal resistance (≤12mΩ) that virtually eliminates voltage sag under heavy loads. The flat top design ensures universal compatibility with spring-loaded contacts and simplifies spot-welding for custom battery packs. When your device needs maximum current without compromise, the Vapcell T28 delivers professional-grade performance.
Key Features
-
25A True Continuous Discharge (CDR) – Massive, stable power for the most current-hungry devices. Handles sub-ohm builds, power tool start-up surges, and hot-rod flashlight turbos with ease.
-
2800mAh Optimized Capacity – The ideal balance for high-drain applications. Provides enough runtime for extended use while maintaining full 25A output capability throughout the discharge cycle.
-
Ultra-Low Internal Resistance (≤12mΩ) – Minimizes heat generation and voltage drop under load, keeping your device cooler and ensuring maximum power delivery from start to finish.
-
Flat Top Design – Universally compatible with all standard 18650 spring-contact chargers, flashlights, and battery trays. The flat terminal is perfect for spot-welding nickel strips in custom battery packs.
-
2-Pack Convenience – Ideal for single-cell mechanical mods, dual-battery regulated devices, or keeping a charged spare ready for your high-drain flashlight or power tool.
-
Vapcell Quality Control – Each cell is tested and matched for consistent capacity and internal resistance, ensuring reliable performance across the pack. Based on the industry-trusted Molicel P28A platform.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | Vapcell T28 |
| Cell Core | High-drain 18650 (Molicel P28A equivalent) |
| Typical Capacity | 2800 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | ~2700 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge (CDR) | 25 A (cell temperature ≤ 80°C) |
| Max Pulse Discharge | Up to 35 A (short burst, monitor temperature; not for continuous use) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (1400 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (2800 mA); 0.5C recommended for best longevity |
| Internal Resistance | ≤ 12 mΩ (AC 1 kHz) |
| Cycle Life | ≥ 250 cycles (to 80% capacity, 1C charge / 10A discharge) |
| Operating Temperature (Discharge) | -20°C to 60°C (ensure adequate cooling for sustained 25A) |
| Top Type | Flat Top |
| Dimensions | Approx. 18.4 mm diameter × 65.0 mm length |
| Weight (single cell) | Approx. 45 g |
| Package Includes | 2 × Vapcell T28 18650 cells in protective packaging |
Applications
Recommended For
-
High-Power Vaping: Mechanical mods and high-wattage regulated devices running sub-ohm builds (safely down to ~0.14Ω at 3.6V). The 25A CDR provides a generous safety margin for demanding coils, while the ultra-low internal resistance ensures instant ramp-up and minimal sag.
-
Cordless Power Tools: Impact drivers, drills, and wrenches. The 25A continuous rating handles start-up surges and sustained loads with ease. Perfect for rebuilding tool battery packs when used with matched cells and a proper BMS.
-
High-Output FET Flashlights: Hot-rod torches and multi-emitter custom builds that demand 20–25A on turbo. Enjoy extreme brightness with rock-steady voltage.
-
RC Cars, Boats & Airsoft: Competitive models requiring instantaneous high current bursts without voltage drop. The T28 delivers instant throttle response.
-
DIY High-Current Projects: Spot welders, portable jump starters, and any application demanding reliable, high-rate discharge.
Not Recommended For
-
Long-Runtime Low-Power Devices: Solar lights, camping lanterns, and wireless sensors. These benefit more from a 3500mAh high-capacity cell such as the Vapcell M35 or N40.
-
Extreme Competition Vaping (>25A Continuous): Requires 30–35A CDR. Choose the Vapcell K30 (30A CDR) or Molicel P26A (35A CDR) for super-sub-ohm builds.
-
Standard USB Power Banks: The extreme current capability is wasted, and the 2800mAh capacity is lower than high-energy alternatives.
FAQ
Q: What is the actual CDR of the T28? I've seen "35A" mentioned.
A: The Vapcell T28 has a Continuous Discharge Rating (CDR) of 25A. The "35A" figure that appears on some listings is the pulse rating—a short burst capability, not a continuous rating. It is based on the Molicel P28A, which is factory-rated at 25A CDR. Never design your system based on pulse ratings for sustained operation.
Q: Can I use this battery for vaping? What resistance is safe?
A: Absolutely. The T28 is one of the best 18650 cells for mechanical mods and high-wattage regulated devices. With a 25A CDR at 3.6V nominal, it can safely handle builds down to approximately 0.14Ω, leaving a comfortable safety margin. Always calculate your actual current using Ohm's law and never exceed 25A continuous.
Q: Is this battery suitable for power tools?
A: Yes, for impact drivers, drills, and similar tools. The 25A continuous rating handles these applications well. For heavy-duty tools like angle grinders that demand 35A+ sustained current, choose cells with a higher CDR. Always use matched cells, spot-weld connections, and a properly rated BMS when building or rebuilding tool packs.
Q: Why choose the T28 over a 3000mAh/20A cell?
A: The T28 trades about 200mAh of capacity for a significant increase in current capability (25A vs. 20A). If your device draws 20–25A, the T28 will deliver more stable voltage and run cooler than a 20A cell pushed to its limit. For maximum runtime below 20A, consider the Vapcell V30 (3000mAh/20A) instead.
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.
