Description
Harness extreme current and uncompromising safety with the Vapcell T25, a 26650 LiFePO4 cell engineered for the most punishing high-drain applications. This 10-pack delivers a staggering 60A continuous discharge at a nominal 3.2V, making it the definitive power source for automotive jump starters, RC engine starters, high-torque power tools, portable spot welders, and any project where instant, sustained high current is non-negotiable. LiFePO4 chemistry provides exceptional thermal stability and over 2000 charge cycles—vastly outlasting standard lithium-ion cells. Critical: This is a 3.2V LiFePO4 battery. It requires a dedicated LiFePO4-compatible charger and is not compatible with standard 3.7V lithium-ion devices or chargers. The flat top design and 10-pack quantity are perfect for building custom high-current 4S (12.8V) jump starter packs or heavy-duty tool batteries.
Key Features
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60A True Continuous Discharge (CDR) – Delivers massive, stable current for the most demanding applications. Handles engine cranking surges, spot welder pulses, and high-torque tool loads effortlessly. Ultra-low internal resistance minimizes voltage sag under extreme loads.
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LiFePO4 (Lithium Iron Phosphate) Chemistry – Inherently safer than traditional Li-ion. Exceptional thermal stability virtually eliminates fire or explosion risk. Provides over 2000 charge/discharge cycles—approximately 4–8 times the lifespan of typical lithium-ion cells.
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2500mAh / 3.2V Nominal – Optimized for maximum current output. Please note the 3.2V nominal voltage is not compatible with standard 3.7V devices. Total energy approximately 8Wh per cell.
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26650 Form Factor – Larger diameter (26.5mm) allows superior current handling and heat dissipation. Always verify your device accepts 26650 cells before ordering.
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Flat Top Design – Ideal for spot-welding nickel strips when building custom high-current battery packs. Also compatible with spring-contact devices designed for flat top 26650 cells.
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10-Pack Bulk Value – Build a 12.8V (4S) jump starter pack, a high-torque tool battery, or a multi-cell spot welder power bank. Matched cells ensure consistent pack performance.
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Critical Charger Requirement – Must use a charger with LiFePO4 (3.2V) mode. Standard 3.7V lithium-ion chargers will dangerously overcharge this cell and cause permanent damage.
Parameters
Applications
Recommended For
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Automotive Jump Starters & Portable Emergency Power: Build a 12.8V (4S) jump starter that safely delivers hundreds of amps to start vehicles. The inherent safety and long life of LiFePO4 make it ideal for emergency equipment stored in vehicles.
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RC Engine Starters & Glow Plug Igniters: Provide instantaneous, sag-free current for starting nitro and gas RC engines. Consistent power delivery even under heavy load.
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High-Torque Cordless Power Tools: Build or rebuild heavy-duty 4S–5S tool battery packs for angle grinders, impact wrenches, and circular saws that demand sustained high current.
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Portable Spot Welders: Multi-cell parallel configurations deliver the immense short-circuit currents required for welding nickel strips and battery tabs.
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Modified E-Bikes & High-Power Mobility: Use in high-current battery packs where safety, cycle life, and consistent power delivery under acceleration are critical.
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High-Power Lighting Systems: HID searchlights, professional cinema lighting, and custom flashlight builds requiring sustained high current.
Not Recommended For
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Standard 3.7V Lithium-Ion Devices: Most consumer flashlights, power banks, and electronics are designed for 3.6V/3.7V cells. Using a 3.2V LiFePO4 cell may cause the device to not power on, display low battery, or perform poorly.
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Standard 3.7V Lithium-Ion Chargers: You must use a charger with dedicated LiFePO4 (3.2V) mode. Charging with a standard 4.2V Li-ion charger will overcharge and permanently damage the cell, creating a safety hazard.
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18650 or 21700 Devices: The 26650 format is larger (26.5mm diameter). It will not physically fit in smaller battery compartments.
FAQ
Q: Can I use this battery in my regular flashlight?
A: No, for two important reasons. First, this is a 26650 cell (26.5mm diameter)—it is physically larger than 18650 and 21700 cells and will only fit devices specifically designed for 26650. Second, this is a 3.2V LiFePO4 cell. Most flashlights are designed for 3.7V lithium-ion cells and will not function properly with a lower voltage.
Q: Can I charge this with my existing lithium-ion charger?
A: Only if your charger has a dedicated LiFePO4 (3.2V) mode. Standard lithium-ion chargers charge to 4.2V, which will dangerously overcharge a LiFePO4 cell (maximum safe voltage is 3.65V). Using the wrong charger will permanently damage the battery and could cause a fire. Always verify your charger supports LiFePO4 before use.
Q: Why is the capacity only 2500mAh? That seems low for a 26650.
A: This cell is engineered for maximum current output and safety, not maximum capacity. The 2500mAh is a trade-off to achieve the 60A continuous discharge, ultra-low internal resistance, and 2000+ cycle life. For applications requiring longer runtime at lower currents, consider a high-capacity 26650 cell like the Vapcell K62 (6200mAh/15A).
Q: What are the advantages of LiFePO4 over standard Li-ion?
A: Three key advantages: Safety – LiFePO4 is extremely stable and virtually eliminates the risk of thermal runaway or fire. Longevity – 2000+ cycles vs. 250–500 for typical Li-ion cells. Power Delivery – Lower internal resistance allows for cleaner, higher current output with less voltage sag. The trade-off is lower voltage (3.2V vs. 3.7V) and lower energy density.
Q: Can I build a 12V jump starter with this 10-pack?
A: Yes, a 10-pack provides enough cells for a 4S (12.8V nominal) jump starter with spares. You need 4 cells in series for 12.8V, so you can build two complete 4S packs with two cells left over. This setup can deliver the high cranking amps needed to start most vehicles. Always use a properly rated LiFePO4-specific BMS, heavy-gauge nickel strips or copper bus bars, and matched cells.
Q: How should I store these cells when not in use?
A: Store at approximately 3.2–3.3V (50–70% charge for LiFePO4) in a cool, dry place. Use non-conductive battery cases to prevent short circuits. LiFePO4 cells have an exceptionally low self-discharge rate, making them perfect for emergency equipment stored for long periods.
