Product Description:
Power your demanding tools and devices with the 18500 3.7V 2000mAh 3C High-Drain Li-ion Battery (2-Pack). This premium cylindrical cell delivers exceptional performance with a massive 2000mAh capacity, stable 3C discharge rate, and ultra-low internal resistance (≤25mΩ). Whether you are repairing a cordless hair clipper, upgrading a tactical flashlight, or building custom power packs, this high-drain battery provides the reliable, sustained power you need.
To meet diverse installation and safety requirements, we offer 4 distinct versions in this single listing:
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Flat Top (50mm): Bare cell with a flat positive terminal, ideal for spring-loaded contacts or spot-welding into battery packs.
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Button Top (52mm): Features a raised positive terminal for secure connections in spring-compartment devices like flashlights.
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Flat Top with Solder Tabs (52mm): Includes pre-welded nickel tabs for direct soldering onto motherboard PCBs.
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Button Top with Built-in PCB (53mm): Features an integrated Protection Circuit Board (PCB) that prevents over-charge, over-discharge, and short circuits for maximum safety.
CRITICAL SIZE & VERSION WARNING:
This is an 18500 battery with a large 18mm diameter. It will NOT fit standard 14mm (14500) or 16mm (16500) battery slots.
Please pay special attention to the height difference between the 4 versions:
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Flat Top: 50mm (Shortest, fits standard slots).
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Button Top: 52mm (+2mm for the raised terminal).
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Flat Top with Solder Tabs: 52mm (+2mm for the welded tabs).
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Button Top with Built-in PCB: 53mm (Tallest, includes the safety protection board).
Please measure your device's internal battery compartment diameter and depth before ordering to ensure the correct version is selected.
Key Features:
Massive 2000mAh Capacity & 3C High-Drain Output: Delivers extended runtime and stable 3C discharge current, ideal for medium-to-high power devices like clippers and flashlights.
Ultra-Low Internal Resistance (≤25mΩ): Ensures minimal power loss and reduces heat generation during high-current usage.
4-in-1 Versatile Selection: One listing offers four connection styles (Flat Top, Button Top, Solder Tabs, and Built-in PCB) to fit any repair or DIY project.
Built-in PCB Safety (Select Version Only): The Protected version features a smart circuit to prevent over-charging, over-discharging, and short circuits.
Convenient 2-Pack: Comes with two identical batteries, perfect for dual-battery devices or keeping a reliable backup ready.
Parameters:
Applications:
Cordless Hair Clippers, Trimmers & Shavers
High-Performance LED Flashlights & Tactical Torches
Custom Battery Pack Building (Spot welding required for Flat Top)
Portable Power Tools & Small Motors
DIY Electronics & Home Appliance Repairs
FAQ:
Q: What is the difference between the 4 versions listed in this product?
A: They differ in the terminal style and height.
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Flat Top (50mm): Bare cell, no tabs, fits flat contact plates.
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Button Top (52mm): Raised positive terminal for spring-loaded compartments.
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Flat Top with Solder Tabs (52mm): Pre-welded tabs for direct PCB soldering.
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Button Top with Built-in PCB (53mm): Includes a safety protection board (tallest version).
Q: Is this battery compatible with my 14500 or 16500 device?
A: No. This is an 18500 battery with an 18mm diameter, which is much thicker than the 14mm (14500) or 16mm (16500) sizes. It will physically not fit into those slots.
Q: I chose the "Protected" version. Does it protect against over-discharge?
A: Yes. The version with the Built-in PCB features a Protection Circuit Board that prevents over-charging, over-discharging, and short circuits, making it much safer to use in devices without their own protection circuits.
Q: What does "3C discharge" mean?
A: 3C means the battery can safely discharge at a rate 3 times its capacity. For a 2000mAh battery, 3C equals a maximum continuous discharge current of 6000mA (6A). This makes it suitable for medium-to-high power tools.
Q: How long does it take to fully charge this battery?
A: It depends on your charger. With a standard 1A (1000mA) charger, it will take about 2.5 to 3 hours. We recommend using a dedicated 3.7V/4.2V Li-ion smart charger.
