4-Pack Vapcell IFR26650 2600mAh 3.2V LiFePO4 55A CDR Flat Top Battery – Ultra High Drain for Jump Starters, RC & Power Tools
Description
Description
Harness extreme current and bulletproof safety with the Vapcell IFR26650 2600mAh LiFePO4 cell. This 4-pack delivers an astonishing 55A 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 application where instant, sustained high current is critical. LiFePO4 chemistry provides exceptional thermal stability and over 2000 charge cycles, dramatically outlasting standard lithium-ion cells. Important: 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 is perfect for building custom high-current battery packs.
Key Features
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55A True Continuous Discharge (CDR) – Delivers massive, stable current for the most demanding high-drain applications. Handles engine starter surges, spot welder pulses, and heavy tool loads with ease. Ultra-low internal resistance ensures minimal voltage sag.
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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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2600mAh / 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 8.3Wh.
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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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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
| Parameter | Specification |
|---|---|
| Model | Vapcell IFR26650 (2600mAh) |
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Form Factor | 26650 |
| Nominal Voltage | 3.2 V |
| Charge Voltage (Max) | 3.65 V ± 0.05 V |
| Typical Capacity | 2600 mAh (0.5C discharge to 2.0V) |
| Max Continuous Discharge (CDR) | 55 A |
| Max Pulse Discharge | Up to 80–100 A (short burst, monitor temperature) |
| Discharge Cut-off Voltage | 2.0 V |
| Standard Charge | CC-CV, 0.5C (1300 mA) to 3.65 V, cut-off 30 mA |
| Max Charge Current | 1C (2600 mA) |
| Internal Resistance | ≤ 10 mΩ (extremely low) |
| Cycle Life | ≥ 2000 cycles (to 80% capacity) |
| Operating Temperature (Discharge) | -20°C to 60°C |
| Charging Temperature | 0°C to 45°C |
| Top Type | Flat Top |
| Dimensions | Approx. 26.5 mm diameter × 65.5 mm length |
| Weight (single cell) | Approx. 83 g |
| Package Includes | 4 × Vapcell IFR26650 2600mAh cells in protective packaging |
Applications
Recommended For
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Automotive Jump Starters & Portable Emergency Power: Build a 12V (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 2600mAh? That seems low for a 26650.
A: This cell is engineered for maximum current output and safety, not maximum capacity. The 2600mAh is a trade-off to achieve the 55A 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 4-pack?
A: Yes, a 4-pack provides exactly the number of cells needed for a 4S (12.8V nominal) jump starter configuration. 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.
Shipping and Returns
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Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
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Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
Payment & Security
Payment methods
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Security
After testing various LiFePO4 cells, the Vapcell IFR26650 with 2600mAh and 55A is unmatched for extreme high-drain applications.
I ran a discharge test at 55A and the temperature stayed under 60¡ãC. The IFR26650 handles extreme current with remarkable thermal management.
If you race competitively, the Vapcell IFR26650 provides the extreme current needed for winning performance with LiFePO4 safety.
I have about 250 cycles on these IFR26650 cells in my jump starter. They still test at over 2550mAh. LiFePO4 longevity is incredible.
The IFR26650 costs more than standard Li-ion, but the 55A capability and LiFePO4 safety are priceless for critical applications.
Refund Policy
OneAndes Return & Refund Policy
At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
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Condition: Items must be unused, undamaged, and in the same condition that you received them.
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Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
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Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
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Batteries that have been installed, used, or show any signs of wear.
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Items marked as “Final Sale” or “Clearance” at the time of purchase.
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Customized or special-order products.
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Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
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Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
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Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
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Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
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Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
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Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
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Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
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Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
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Partial Refunds: In certain situations, only partial refunds may be granted:
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Items not in original condition, missing parts, or damaged for reasons not due to our error.
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Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
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Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
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Email: support@oneandes.com
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Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.