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Li-ion Pack

18650 Li-ion Cell 3.7V/4.2V 2600mAh — EXW $1.20/pcs

3.7V/4.2V · 2600mAh · EXW $1.20/pcs

High-quality cylindrical 18650 lithium-ion rechargeable cell. Nominal voltage 3.7V, max charge voltage 4.2V, rated capacity 2600mAh. Ideal for medium-drain devices such as portable power stations, LED lighting systems, medical handheld instruments, and custom battery pack projects.

MOQ

Sample: 100 pcs | Mass production: 1000 pcs

Lead Time

Sample: 3–5 days | Mass production: 7–15 days

CERoHSUN38.3MSDS

EXW Price

$1.20/pcs

Select Quantity (MOQ 1 pcs)

Total (100 pcs)

$120.00

Payment: T/T Wire TransferSamples ship in 3–5 daysCE · UN38.3 · RoHS · MSDS
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18650 Li-ion 2600mAh Battery Cell OEM — 3.7V/4.2V Cylindrical Lithium Ion Cell Manufacturer Foshan China | COSOMIC
cosomicexpert of battery packs

Technical Specifications

Nominal Voltage3.7V
Max Charge Voltage4.2V
Rated Capacity2600mAh (9.62Wh)
Cell Format18650 cylindrical
ChemistryLi-ion (NMC)
Continuous Discharge1C–2C (2.6A–5.2A)
Cycle Life≥ 500 cycles @ 80% DoD
Operating Temperature-20°C to +60°C
Storage Temperature-40°C to +70°C
Weight≈ 48g per cell
Dimensions18.3mm × 65.0mm
EXW Price$1.20 / pcs (China factory)

* All specifications are subject to customization. Contact us for your exact requirements.

Key Features

Higher Capacity

2600mAh delivers 30% more runtime than 2000mAh cells in the same 18650 form factor.

Safety Certified

CE, RoHS, UN38.3, and MSDS certified for international shipping and end-use compliance.

Versatile Assembly

Spot-weld friendly for custom packs. Standard 0.15mm nickel strip compatible.

Fast Dispatch

Samples ship in 3–5 days. Mass production lead time 7–15 days from Foshan, China.

Need a custom spec?

Our engineering team can adjust any parameter to fit your exact application requirements.

Send an InquiryChat on WhatsApp
Use Cases

Application Scenarios

Where the 18650 Li-ion Cell 3.7V/4.2V 2600mAh — EXW $1.20/pcs is commonly deployed across industries.

LED Lighting

High-lumen flashlights, work lights, camping lanterns, and emergency lighting

Portable Power

Medium-capacity power banks, portable medical instruments, handheld tools

Medical Handheld

Portable patient monitors, pulse oximeters, handheld ultrasound devices

Custom Pack Builds

2S–14S custom battery packs for RC, robotics, toys, and DIY power systems

Our OEM / ODM Process

From your requirement to finished battery — step by step.

01

Requirement

Submit your specs, application, and target quantities

02

Design & Quote

Our engineers prepare a solution and quotation within 24h

03

Sample

Prototype samples produced and shipped for your approval

04

Mass Production

Full production run with QC inspection and timely delivery

Real Projects

Related Case Studies

See how similar battery systems have been engineered and deployed for clients in the same industry.

AGV & Robotics🇩🇪 Germany

48V 100Ah LiFePO4 Pack with CAN Bus for AMR Fleet

European Warehouse Automation OEM

97% fleet uptime

Result

Challenge

A German warehouse automation company needed a battery that could sustain 24/7 operation across 300+ AMR robots, support opportunity charging at docking stations, and report real-time SOC to the fleet management system.

Our Solution

We designed a 48V 100Ah LiFePO4 pack with a custom CAN Bus 2.0B BMS, pogo-pin auto-charging interface, and ±2% SOC accuracy. The housing was engineered to match their AMR chassis slot dimensions exactly — no modification required on the robot side.

Key Specifications

Voltage

48V (LiFePO4)

Capacity

100Ah

Communication

CAN Bus 2.0B

Charging

Pogo-pin auto-dock

Cycle Life

3,000+ cycles

IP Rating

IP54

Certifications Achieved

CEIEC62619UN38.3

Outcome

Fleet uptime increased from 83% to 97% after switching from lead-acid to our LiFePO4 system. Battery weight reduction of 62% improved robot payload capacity.

Have a similar project?

Discuss your requirements with our engineers — free consultation within 24h.

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FAQ

Frequently Asked
Questions

Common questions about ordering, customization, certifications, and lead times for the 18650 Li-ion Cell 3.7V/4.2V 2600mAh — EXW $1.20/pcs.

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Can't find your answer? Our team replies within 2 hours.

The EXW factory price is $1.20 per piece. Sample MOQ is 100 pcs with a 3–5 day lead time. Mass production MOQ is 1000 pcs with a 7–15 day lead time. Payment terms: T/T (Telegraphic Transfer).

The 2600mAh cell provides approximately 30% more capacity and runtime compared to the 2000mAh cell, while maintaining the same 18650 form factor (18.3mm × 65.0mm). This makes it ideal for applications requiring longer runtime without increasing pack size.

1. Use a charger compatible with lithium battery specifications. 2. Do not reverse polarity or short circuit. 3. Never expose to fire, water, or extreme heat. 4. Do not disassemble, puncture, or crush. 5. Charge unused batteries once per month. 6. Store in a cool, dry place. 7. Avoid deep discharge — recharge before the battery is fully drained. 8. Store unused batteries in a cool place to prevent capacity loss.

These cells are suitable for light-duty custom packs such as flashlights, power banks, and small electronics. For high-drain applications like e-bikes and power tools, we recommend our high-drain 21700 cells or custom Li-ion packs designed for sustained high-current discharge.

Yes. We offer tiered pricing starting at 1000 pcs, with additional discounts at 5000 pcs, 10,000 pcs, and 50,000+ pcs. Contact our sales team for a volume quotation.

All 18650 cells carry CE, RoHS, UN38.3 transport safety, and MSDS documentation. Test reports and certificates of conformity are available upon request.

Still have questions?

Our battery engineers are ready to help with your specific project requirements.

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Accessories

Related Accessories

Complete your battery system with compatible chargers, BMS modules, connectors, and enclosures — all OEM customizable.

Send an Inquiry
Smart Chargers (3A–15A) — COSOMIC Battery Accessory
Best SellerCharger

Smart Chargers (3A–15A)

Specifically matched to your pack chemistry (CC/CV). Intelligent cutoff, LED status, OVP/OCP/SCP protection. Available from 3A to 15A output current for all voltage ranges.

Input: 100–240V AC
Output: 12V–96V custom
Current: 3A / 5A / 10A / 15A
Chemistry: CC/CV matched

Compatible: Li-ion, LiFePO4, LiPo — All Voltages

View Details
BMS Modules (SMBus / CAN / RS485) — COSOMIC Battery Accessory
PopularBMS

BMS Modules (SMBus / CAN / RS485)

Available for 3S to 32S configurations with active balancing and full protection. Supports SMBus, CAN Bus, and RS485 communication protocols for seamless system integration.

3S–32S Li-ion / LiFePO4
Comm: SMBus / CAN / RS485
Balancing: Active / Passive
SOC / SOH / Temp monitoring

Compatible: EV, Energy Storage, Medical, Industrial

View Details
Connectors & Wiring (IP65 Rated) — COSOMIC Battery Accessory
IP65 RatedConnector

Connectors & Wiring (IP65 Rated)

Waterproof aviation plugs and nickel-plated copper harnesses rated IP65. Suitable for outdoor, marine, and industrial battery pack applications requiring reliable sealed connections.

IP65 waterproof rated
Aviation plug / Anderson / XT90
Nickel-plated copper wire
Rating: 30A–200A custom

Compatible: All Battery Types — Outdoor & Industrial

View Details
24V / 36V Smart Charger — COSOMIC Battery Accessory
VersatileCharger

24V / 36V Smart Charger

Universal smart charger for 24V and 36V Li-ion battery packs. Compact design with universal AC input, suitable for power tools, medical devices, and consumer electronics.

Input: 100–240V AC
Output: 29.4V / 42V
Current: 3A / 5A
Connector: DC5525 / XLR / Custom

Compatible: Power Tools, Medical, Consumer

View Details
4S–8S Compact BMS — COSOMIC Battery Accessory
CompactBMS

4S–8S Compact BMS

Compact BMS for small Li-ion packs (4S–8S). Ideal for power tools, medical devices, and consumer electronics. Includes overcharge, over-discharge, and short-circuit protection.

4S–8S Li-ion
Continuous: 20A / 40A
Balance: Passive 50mA
Size: 60×40mm compact

Compatible: Power Tools, Medical, Consumer

View Details
Custom Battery Enclosure — COSOMIC Battery Accessory
CustomHousing

Custom Battery Enclosure

ABS/PC injection-molded battery enclosures with IP65/IP67 rating options. Custom shapes, colors, and branding available. Designed to fit your exact battery pack dimensions.

Material: ABS / PC / Aluminum
IP Rating: IP54 / IP65 / IP67
Color: Custom RAL
MOQ: 100 pcs

Compatible: All Battery Types

View Details

All accessories are OEM customizable

Custom connectors, branding, voltage ratings, and packaging available. Contact us for bulk pricing and OEM options.

Email for Custom Quote
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Need a different spec?

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Custom Li-ion Battery Pack Engineering — OEM & ODM Solutions by COSOMIC

Lithium-ion NMC and NCA battery packs occupy the high-energy-density tier of the COSOMIC product catalog. Whether you require a compact 7.4V 2Ah pack for a handheld medical scanner, a multi-cell 36V 30Ah module for a warehouse robot, or a high-rate 48V assembly for an industrial power tool, our engineering team designs the cell configuration, BMS protection parameters, and housing to match your exact application envelope and operating conditions.

All custom Li-ion battery packs from COSOMIC ship with CE, RoHS, and UN38.3 transport certification as standard. IEC 62133 and IEC 62619 test reports are available for projects requiring formal battery safety compliance. For US market entry, we support UL 2054 and UL 2580 testing coordination through third-party accredited laboratories.

COSOMIC's Foshan factory sources Grade-A cells from Samsung SDI, LG Energy Solution, Panasonic, CATL, and Lishen. Minimum order quantities start at 30 units for mass production with sample lead times of 7–15 days. Upload your dimensional drawing or product specification and receive a full engineering proposal within 24 hours.

custom Li-ion battery pack OEMNMC lithium battery pack manufacturer Chinali-ion pack with BMS Foshan

Application Engineering Guide

Industrial Power Tool Battery Solutions

Technical Articles

18650 vs 21700 vs 26650 Cell Selection GuideUnderstanding BMS ArchitectureBattery Pack Thermal Management Design Guide
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COSOMIC TECHNOLOGY COMPANY LIMITED is a battery system engineering company specializing in custom OEM and ODM power solutions for industrial, medical, mobility, and energy storage applications.

Building 8, New Energy Industrial Park, Foshan, China
+86 158 8990 0503

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Certifications:CEUN38.3RoHSIEC62619MSDSISO 9001

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