SwisLight INR 26650 A 3.7V 7000mAh 21A High-Drain Li-ion Battery – 35A Peak, 18mΩ Ultra-Low IR for High-Power Devices (Flat/Large Button/Small Button Top, 2pcs)

Product Description:
The SwisLight INR 26650 A is a flagship-grade 26650 lithium-ion battery engineered for extreme capacity and high-power performance. This 2pcs bundle delivers a massive 7000mAh (25.9Wh) capacity, an impressive 21A continuous discharge current (35A peak), and an ultra-low internal resistance of just 18mΩ. It sets a new standard for high-power, high-capacity 26650 cells.

Built with advanced ternary lithium chemistry, this battery offers high energy density, exceptional power delivery, and reliable performance under sustained heavy loads. It is the ultimate power source for high-intensity tactical flashlights, professional camera flashes, high-torque power tools, and custom series battery packs.

To suit your specific device requirements, we offer 3 top-terminal variants:

1. Flat Top (2pcs): Length 65.2mm. Flat positive terminal. NOT suitable for series connection. Ideal for single-cell devices or battery pack assembly.

2. Large Button Top (2pcs): Length 67.3mm. Large protruding positive terminal. Supports series connection (please specify when ordering).

3. Small Button Top (2pcs): Length 66.3mm. Small protruding positive terminal. Supports series connection (default shipping version).

Key Features:

• 2pcs of SwisLight INR 26650 A Premium Cells: High-quality Swiss-designed 26650 Li-ion batteries with a true 7000mAh capacity.

• 7000mAh / 25.9Wh High Capacity: Provides massive energy storage for extended runtimes.

• 21A High Continuous Discharge: Delivers a powerful 21A continuous output (35A peak) for demanding applications.

• Ultra-Low Internal Resistance (18mΩ): Ensures minimal heat generation and maximum power transfer efficiency.

• Ternary Lithium Chemistry: Provides high energy density and excellent power delivery.

• Versatile Top Options: Choose from Flat Top (non-serializable), Large Button Top, or Small Button Top (both serializable) to match your device.

• Swiss Engineering Quality: Built to high standards for durability, consistency, and reliable performance.

• Standard 26650 Size: Perfectly fits standard 26650 battery compartments (26.2mm diameter).

Product Parameters:

• Brand: SwisLight

• Model: INR 26650 A

• Size: 26650

• Capacity: 7000mAh / 25.9Wh

• Nominal Voltage: 3.7V

• Usage Voltage: 2.75V to 4.25V

• Continuous Discharge Current: 21A

• Peak Discharge Current: 35A

• Chemistry: Ternary Li-ion (Lithium Ion)

• Internal Resistance: 18mΩ (Flat) / 18-20mΩ (Button Top)

• Weight: 95g (Flat) / 97g (Button Top)

• Variant Options: Flat Top (65.2mm) / Large Button Top (67.3mm) / Small Button Top (66.3mm)

• Series Connection Support: Yes (Button Top variants) / No (Flat Top)

• Dimensions: 26.2mm (Diameter) x Height varies by variant

• Pack Quantity: 2pcs

Applications:

• High-Intensity Tactical Flashlights: Powers the brightest tactical flashlights and searchlights with sustained 21A energy.

• Professional Camera Flashes: Delivers 35A peak power for rapid recycle times and burst shooting.

• High-Torque Cordless Power Tools: Drives demanding power tools, impact drivers, and electric drills.

• High-Performance RC Hobbies & Drones: Provides sustained high-current power for high-torque RC cars and heavy-lift drones.

• Multi-Battery Series Battery Packs: Button Top variants are ideal for building custom 24V, 36V, or 48V high-power battery packs.

Frequently Asked Questions (FAQ):

Q1: What is the difference between the three variants?
A1: * Flat Top (65.2mm): Flat positive terminal. NOT suitable for series connection. * Large Button Top (67.3mm): Large protruding terminal. Supports series connection. Please specify when ordering. * Small Button Top (66.3mm): Small protruding terminal. Supports series connection. (Default shipping version.)

Q2: What is the discharge current of this battery?
A2: This SwisLight INR 26650 A is rated for a powerful 21A continuous discharge current with a 35A peak, making it one of the highest-performing 26650 cells available.

Q3: What is the advantage of the 18mΩ ultra-low internal resistance?
A3: 18mΩ is exceptionally low for a 26650 cell. This means the battery generates very little heat and loses almost no energy during high-current discharge, maximizing performance and protecting your equipment.

Q4: Can I use these batteries in series?
A4: Yes, the Large Button Top and Small Button Top variants support series connection. The Flat Top variant does NOT support series connection.

Q5: What kind of charger should I use for this battery?
A5: You must use a charger specifically designed for 3.6V/3.7V Li-ion batteries with a 4.2V cut-off voltage. Do not use a standard AA/AAA Ni-MH charger.