18650 Rechargeable Lithium-ion Batteries, 3000mAh (2-Pack) – Protected 3.7V Cells for Flashlights & Devices

Premium 18650 3.7V Li-ion cells delivering 3000mAh each with integrated PCB protection (over-charge/over-discharge/short-circuit). Long life (500+ cycles), low self-discharge, and light weight, perfect power for 18650-compatible flashlights, lanterns, doorbells, radios, motion lights, and more. (Not recommended for high-drain vaping devices.).

Key Features

High Capacity: 3000mAh nominal (2600mAh min) for extended runtime
Protected Cells: Built-in PCB safeguards at 2.5V (low) & 4.25V (high)
Reliable 3.7V Output: Stable power, low self-discharge, high energy density
Long Service Life: ~90% capacity after 400 cycles; 500+ charge cycles
Lightweight & Versatile: Ideal for flashlights, camping lanterns, doorbells, work lights, radios, solar yard lights & more

Specifications

Format: 18650 cylindrical (Ø18 mm × 65 mm)
Chemistry: Rechargeable Li-ion
Voltage: 3.7V nominal; 2.5V cutoff; 4.25V max charge (PCB protected)
Capacity: 3000mAh nominal (≥2600mAh min)
Internal Impedance: ≤180 mΩ (with PTC)
Cycle Life: >500 cycles (≈90% after ~400 cycles)
Recommended Charge: 0.5C (~1500mA) to 4.2V; terminate at ~0.01A
Recommended Discharge: 0.5C (~1500mA) to 3.0V
Protections: Over-charge, over-discharge, short-circuit

Compatibility & Use

Works in devices that explicitly support 18650 Li-ion 3.7V batteries: tactical/EDC flashlights, headlamps, video doorbells, camping lanterns, motion lights, portable fans/radios, Bluetooth speakers, electronics projects, etc.
Not for high-drain vaping or devices requiring unprotected/high-drain cells.

What’s in the Box

(2) 18650 3.7V 3000mAh protected Li-ion batteries

Safety & Care

Charge only with a Li-ion compatible smart charger that supports 18650 cells.
Do not mix old and new cells in the same device.
Store cool & dry at ~40–60% charge for long-term storage.
Do not short, crush, or expose to fire/water.