Maximize your runtime with the Vapcell M35, a high-capacity 18650 cell that delivers an impressive 3500mAh with a stable 10A continuous discharge. This 2-pack is the ideal power solution for devices where endurance matters most: LED flashlights, high-capacity power banks, portable fans, solar lights, and wireless security cameras. The flat top design ensures broad compatibility with spring-loaded contacts and makes spot-welding into custom packs straightforward. With excellent cycle life and Vapcell's trusted cell matching, the M35 provides consistent, long-lasting power for all your everyday devices. When your priority is going longer between charges, the M35 is the endurance champion.
Key Features
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3500mAh Maximum Capacity – Among the highest capacity available in a 18650 cell. Provides exceptional runtime for medium-drain devices, significantly extending the time between charges.
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10A Continuous Discharge – Delivers stable, reliable power for most regulated LED flashlights, USB power banks, portable fans, and similar devices without overheating or voltage sag.
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Flat Top Design – Compatible with all standard 18650 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 – Perfect for building a compact 7000mAh power bank (2 cells in parallel), keeping a spare ready for your flashlight, or refreshing solar lights.
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Vapcell Quality Control – Each cell is tested and matched by Vapcell using authentic high-quality cells from major manufacturers (typically LG MJ1 or Panasonic NCR18650GA equivalent), ensuring consistent capacity and low internal resistance.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | Vapcell IMR18650 M35 |
| Cell Core | High-capacity 18650 (equivalent to LG MJ1 / Panasonic NCR18650GA class) |
| Typical Capacity | 3500 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | ~3400 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge (CDR) | 10 A (cell temperature ≤ 75°C) |
| Max Pulse Discharge | Up to 35 A (short burst only, monitor temperature; not for continuous use) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (1700 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (3500 mA); 0.5C recommended for best longevity |
| Internal Resistance | ≤ 35 mΩ (AC 1 kHz) |
| Cycle Life | ≥ 500 cycles (to 80% capacity, 0.5C charge / 1C discharge) |
| Operating Temperature (Discharge) | -20°C to 60°C |
| Top Type | Flat Top |
| Dimensions | Approx. 18.4 mm diameter × 65.0 mm length |
| Weight (single cell) | Approx. 48 g |
| Package Includes | 2 × Vapcell M35 18650 cells in protective packaging |
Applications
Recommended For
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LED Flashlights & Headlamps: Perfect for single-cell lights on medium to high modes. The 3500mAh capacity provides hours of steady illumination—ideal for camping, hiking, and everyday carry.
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High-Capacity USB Power Banks: Build a compact 7000mAh power bank with just two cells in parallel. The 10A rating easily supports 18W fast charging protocols.
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Portable Fans & Cooling Devices: Neck fans, handheld fans, and desk fans benefit from the 3500mAh runtime, keeping you cool for hours on a single charge.
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Solar Garden Lights & Street Lights: Low-current, long-duration use. One cell can power a bright LED through the entire night.
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Wireless Security Cameras & Smart Doorbells: Ultra-low standby power consumption with sufficient peak current for motion-activated recording. Months of operation between charges.
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IoT Devices & Environmental Sensors: Remote battery-powered nodes that need extended operation without frequent maintenance.
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Medical Devices & Portable Monitors: Reliable, stable power for equipment requiring uninterrupted operation within 10A limits.
Not Recommended For
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High-Power Vaping / Mechanical Mods (>10A): This is a 10A continuous cell. Sub-ohm builds and high-wattage regulated mods typically require 15–35A continuous. Using the M35 in such devices will cause severe voltage sag, overheating, and potential damage. The "35A Max" is a pulse rating only, not for continuous use.
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Cordless Power Tools: Drills, saws, and impact drivers demand 15–40A continuous current. Use dedicated high-drain cells like Vapcell K30 (30A) instead.
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RC Cars, Drones & High-Drain Models: These require 20–30A+ continuous current. The M35 is designed for capacity, not extreme current.
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FET-Driven Flashlights Exceeding 10A on Turbo: If your light pulls over 10A on maximum mode, choose a cell rated for higher continuous current to avoid damage and maintain brightness.
FAQ
Q: Can I use this battery for vaping? The label says "35A Max."
A: No, not for high-power vaping. The "35A Max" is a pulse rating for very short bursts only. The continuous discharge rating (CDR) is 10A. Most sub-ohm builds and high-wattage mods require 15–35A continuous, which will cause the M35 to overheat, sag severely, and potentially become unsafe. For vaping, choose a dedicated high-drain cell like the Vapcell K30 (30A continuous).
Q: What devices benefit the most from this cell?
A: Any device that draws less than 10A and where you want maximum runtime between charges: LED flashlights on medium/high, USB power banks, portable fans, solar lights, wireless cameras, and smart doorbells. The 3500mAh capacity means you charge less often.
Q: How does the M35 compare to the K30 or other Vapcell models?
A: The M35 is optimized for maximum capacity (3500mAh) with a 10A continuous limit. The K30 is optimized for high current (30A) with 3000mAh capacity. Choose the M35 for long runtime in low-to-medium drain devices. Choose the K30 for high-power vaping, power tools, and extreme flashlights.
Q: What cell is under the Vapcell wrap? Is it genuine?
A: Vapcell is a reputable rewrapper that uses authentic high-quality cells from major manufacturers. The M35 typically uses LG INR18650 MJ1 or Panasonic NCR18650GA cells—both industry-leading 3500mAh/10A cells. Each batch is tested for capacity and internal resistance to ensure consistency.
Q: Can I build a power bank with these?
A: Absolutely. Two M35 cells in parallel give you approximately 7000mAh. The 10A per cell easily supports 18W USB-C PD fast charging. This is one of the best 18650 cells for DIY power bank projects.
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.
