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The Lishen 2600mAh 13A 18650 flat top battery strikes the perfect balance between runtime and power. This 2-pack is an excellent all-rounder for devices that need more than just capacity: LED flashlights, headlamps, portable fans, electric toys, and DIY projects. With a true 13A continuous discharge and a reliable 2600mAh capacity, it handles medium-to-high current demands without the premium price of ultra-high-drain cells. The flat top design fits all standard spring-contact chargers and lights, and makes spot-welding into custom packs straightforward. From nightly dog walks to weekend projects, the Lishen SK 2600 delivers consistent, dependable energy.
Balanced 2600mAh / 13A Performance – Not just a high-capacity cell, nor a pure high-drain cell, but a versatile middle ground. Enough capacity for solid runtime, enough current for devices that occasionally demand more power.
13A Continuous Discharge – Safely powers regulated LED flashlights on high, portable fans, and even light-duty power tools or airsoft guns without dangerous voltage sag.
Flat Top Design – Universally compatible with 18650 spring-contact battery holders, chargers, and flashlights. The flat positive terminal is also ideal for spot-welding nickel strips in custom battery packs.
Lishen Quality & Reliability – Manufactured by Lishen, a trusted name in lithium-ion production. Each cell is built to deliver consistent capacity and low internal resistance over hundreds of cycles.
2-Pack Convenience – Perfect for keeping a spare charged for your everyday flashlight or headlamp, or for building a small series pack for a DIY project.
| Parameter | Specification |
|---|---|
| Brand / Model | Lishen 18650 SK 2600 13A |
| Typical Capacity | 2600 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | Approx. 2500 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge | 13 A (cell temperature ≤ 75°C) |
| Max Pulse Discharge | Up to 18–20 A (short burst, monitor temperature) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (1300 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (2600 mA); 0.5C recommended for best longevity |
| Internal Resistance | ≤ 35 mΩ (AC 1 kHz) |
| Cycle Life | ≥ 300 cycles (to 80% capacity, 0.5C charge / 1C discharge) |
| Operating Temperature (Discharge) | -20°C to 60°C (ensure adequate cooling at sustained 13A) |
| Top Type | Flat Top |
| Dimensions | Approx. 18.4 mm diameter × 65.0 mm length |
| Weight (single cell) | Approx. 46 g |
| Package Includes | 2 × Lishen 2600mAh 13A flat top 18650 cells in protective packaging |
Recommended For
LED Flashlights & Torches: Ideal for single-cell lights on medium to high modes. The 13A rating handles most regulated drivers with ease, while 2600mAh gives useful runtime.
Headlamps & Bicycle Lights: Lightweight and long-lasting enough for night hikes, runs, or commutes. No need to carry spare batteries for a typical evening outing.
Portable Fans: Neck fans, handheld fans, and small desk fans benefit from the balanced capacity and the ability to maintain speed without voltage drop.
Electric Toys & Airsoft Guns: Many RC cars and airsoft AEGs draw pulses of 8–12A. This cell provides the necessary current without overheating.
Light-Duty Power Tools: Small electric screwdrivers and 3.6V cordless drills can be powered by these cells when used in a properly protected battery pack.
DIY Projects: A great cell for custom battery packs, backup power banks, or Arduino projects that may draw moderate currents.
Not Recommended For
Ultra-Long Runtime Low-Power Devices: If you use a flashlight mainly on low modes, a 3500mAh cell will give you significantly longer runtime.
High-Power Vaping (Sub-Ohm Mechanical Mods): These often require 20A+ continuous. Exceeding 13A can lead to overheating and damage.
Heavy-Duty Power Tools: Angle grinders, hammer drills, and large saws demand 15A+ continuous; use dedicated 20–25A high-drain cells.
Maximum Capacity Solar Lights: 3500mAh cells will store more energy for overnight illumination.
Q: Is 2600mAh considered “high capacity”?
A: It is a mid-to-high capacity cell by general standards, but not the highest. 3500mAh cells are now common for maximum runtime. The Lishen 2600mAh is balanced to also deliver 13A, something many 3500mAh cells (typically rated 10A) cannot do as efficiently under heavier loads.
Q: Can I use these batteries for vaping?
A: Only for low-to-medium power regulated mods drawing well under 13A. For sub-ohm builds or mechanical mods, you need a dedicated high-drain cell (20A or higher). Exceeding 13A on this cell can be unsafe.
Q: Are these protected batteries?
A: No, these are unprotected flat top cells. This is standard for 18650s used in flashlights and DIY packs. Your device should have its own low-voltage protection. When building multi-cell packs, always add an external BMS rated for at least 15A.
Q: Can I use these to replace batteries in my old power tool pack?
A: Yes, for light-duty tools like small electric screwdrivers. The 13A rating is suitable for tools that do not draw heavy continuous currents. Ensure all cells are matched and you install a proper BMS.
Q: How should I store these cells?
A: Store at around 3.6–3.7V (40–50% state of charge) in a cool, dry place. Use non-conductive battery cases to prevent accidental short circuits. Avoid leaving them fully charged or deeply discharged for long periods.
Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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.
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Just as the title says: high capacity, flat top, 3.7V. They power my emergency radio through long evenings. I keep two charged and rotate regularly.
I share these between my camping lantern, a small fan, and a magnetic work light. They never balk at being swapped. Good universal 18650 batteries.
They fit my Fenix light perfectly¡ªno need for button tops. The wrap is smooth and durable. Great for anyone who uses unprotected cells in low-to-medium drain devices.
You get 2600mAh of genuine capacity. I ran a discharge test and was satisfied. Works great in my headlamp for early morning jogs. Bright and long-lasting.
The flat top is perfect for my series battery sled. These cells maintain balance well. I've run them through about 30 cycles and capacity hasn't noticeably dropped.
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