Description

🔋3.7V 18650 2600mAh Button Top

The 3.7V 18650 2600mAh Rechargeable Battery Button Top with PCB is a lightweight, high-energy density power solution that combines large capacity, low cost, and reliable safety features. Compared to 3000mAh 18650 cells, this model offers a 35%–50% lower cost while sacrificing less than 20% capacity, making it an excellent balance of performance and affordability. Equipped with a button top design and a bottom PCB for safety protection, this battery is convenient to use in a wide range of devices, from flashlights to custom battery packs.

2600mAh 18650 Battery 3.7V Rechargeable​ Product Specification

Model: 18650 2600mAh Battery

Rated Capacity: 2600mAh

Energy: 9.62Wh

Energy Density: 218.6Wh/kg

Minimum Capacity: 2550mAh

Rated voltage: 3.7V

Discharge Cut-off Voltage: 2.75V

Charge Cut-off Voltage: 4.2V

Cycle Life: More than 500 cycles

Dimensions: Φ18*65mm

Weight: 44g

Internal Resistance: Less than 30mΩ

Standard Discharge Current: 0.2C (520mA)

Standard Charge Current: 0.2C (520mA)

Max Continuous Discharge Rate: 2A (Upgradable)

Max Continuous Charge Current: 2A

Charging Temperature: 0 to 45℃;

Discharge Temperature: -20 to 65℃

Storage Temperature:

• -20℃~25℃: 12 months
• -20℃~45℃: 3 months
• -20℃~60 ℃: 1 month

Key Features

High Energy Density – 18650 Battery 2600mAh Capacity

Provides long runtime while remaining compact and lightweight, ideal for portable electronics.

Cost-Effective Performance

Compared to 3000mAh cells, it delivers significant cost savings (35%–50% lower) while retaining over 80% of the capacity. This makes it perfect for projects requiring large quantities.

Low Internal Resistance

Ensures efficient energy delivery with minimal power loss and reduced heat generation, even under heavy use.

Built-In PCB Protection

The protection circuit board (PCB) is located at the bottom of the cell, providing overcharge, over-discharge, over-temperature, and short-circuit protection.

Convenient Button Top Design

The button top makes installation easier and ensures compatibility with more devices compared to flat-top cells.

Long Cycle Life

Maintains 90%+ capacity after one year of continuous use, with over 500 charge-discharge cycles.

Flexible Customization Options

PCB position (bottom, top, or side), voltage, capacity (up to 3500mAh per cell), terminals, connectors, labels, sleeves, and packaging can all be customized. OEM branding is supported.

🚀 Applications

✅ LED flashlights and torches
✅ Consumer electronics and gadgets
✅ Medical and industrial devices
✅ Power banks and backup supplies
✅ Custom lithium-ion battery packs

❓ FAQ

Q1: What is the main advantage of 2600mAh vs 3000mAh 18650 cells?
A1: The 2600mAh battery is 35%–50% more cost-effective, with only ~20% less capacity, making it ideal for budget-friendly large-scale projects.

Q2: Why does this battery use a button top?
A2: Button tops ensure easier installation and wider compatibility with devices that require protruding positive terminals.

Q3: How to test a 18650 2600mah battery
A3: You can follow the step: 1, fully charge 18650 2600mah 3.7 v​ to 4.2V; 2, discharge the battery to cut-off voltage with capacity test;

3, confirm the result (does the capacity reach minimum capacity?); 4, check internal resistance (IR).  contact us for professional technical proposal.

Q4: How safe is this battery?
A4: It comes with a built-in PCB that protects against overcharge, over-discharge, overheating, and short circuits, ensuring stable and safe use.

Q5: What is the maximum available capacity for 18650 lithium-ion cells?
A5: A single 18650 lithium-ion cell can be customized up to 3500mAh.

Related Battery

3.7V 18650 Battery with PCB at Top

18650 3.7V Lithium Ion Battery with PCB at Side