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.

Note: USPS Ground Advantage™ service includes up to $100 insurance in the price. We recommend adding the Order Protection option for orders over this amount.

All orders are processed within 2-3 business days.

All orders are processed and shipped during our business hours. Orders are not shipped or delivered on U.S. holidays.

If we are experiencing a high volume of orders, shipments may be delayed.

Please allow additional days in transit for delivery. 

If a significant delay in shipment is expected, then we will contact you via the information you provide at checkout.

Overnight delivery is only available for orders with delivery addresses within the continental United States.

Delivery delays can occasionally occur.

Expected Transit Times

All transit times are based on once your order ships.

USPS Ground Advantage™ - 2 to 5 Business Days

USPS Priority - 1 to 3 Business Days

USPS Priority Express - Next-Day to 2 Business Days

UPS Ground - 1 to 5 Business Days

Once we receive your item, we will inspect it and notify you that we have received your returned item. We will immediately notify you on the status of your refund after inspecting the item. If your return is approved, we will initiate a refund to your original method of payment. You will receive the credit within the terms set forth by your credit card/debit card company.

VIEW FULL RETURNS & REFUNDS POLICIES HERE

You have 30 calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition in which you received it. Your item must be in the original packaging. Your item must have the receipt or proof of purchase .If you make a purchase for the holidays between October 1st and December 25th we will accept returns for those items up until January 31st of the following year provided that the same requirements above are met - the item is unused, has original packaging returned with it, and has a proof of receipt showing the date of purchase. PLEASE NOTE:  The purchaser shall be responsible for paying return shipping costs. Initial shipping fees are nonrefundable.  If your return qualifies for a refund you will receive the refund for that item(s) minus a 10% restocking fee.

VIEW FULL RETURNS & REFUNDS POLICIES HERE