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18650 cylindrical lithium cell for OEM battery pack sourcing, cell matching, and series-parallel pack design

Product image set

18650 cylindrical lithium cell for OEM battery pack sourcing, cell matching, and series-parallel pack design 1
Custom cylindrical cell battery pack assembly using 18650 cells for OEM device integration 2

Cylindrical Cells

18650 Cylindrical Lithium Cell for OEM Battery Packs

18650 cylindrical lithium cell sourcing route for portable devices, medical equipment, smart hardware, security products, and custom OEM battery packs that need mature supply, cell matching, and flexible series-parallel layouts.

18650CylindricalCell matching

Certification support

UN38.3MSDS

Browsing path: 18650 / 21700 / 32700 Cylindrical Lithium Cells

Quick shortlist specs

Full specs are confirmed in the technical table

Voltage
3.6V / 3.7V nominal
Capacity
Model dependent
Chemistry
18650 Li-ion / NMC by project
Energy
Mature compact cell route
Max discharge
Cell model dependent
Cycle life
Chemistry and profile dependent
Dimensions
18mm x 65mm class

Applications

Description & Applications

18650 cylindrical lithium cell sourcing route for portable devices, medical equipment, smart hardware, security products, and custom OEM battery packs that need mature supply, cell matching, and flexible series-parallel layouts.

Portable devicesMedical equipmentSmart hardwareSecurity equipmentOEM battery packs
18650 cylindrical lithium cell for OEM battery pack sourcing, cell matching, and series-parallel pack design

Download Technical Datasheet & Drawing

18650 Cylindrical Lithium Cell

Leave your email and project application. We will treat the datasheet request as a high-intent RFQ and follow up with drawings and matching advice.

Accessories

Capacity upsell & related products

Cell holder
Nickel strip
BMS
Harness
Connector
21700 cylindrical lithium cell for high-capacity OEM battery packs, cell matching, and pack layout planning
21700CylindricalHigh capacity

21700 Cylindrical Lithium Cell

21700 cylindrical lithium cell sourcing route for OEM battery packs that need higher cell capacity, fewer parallel cells, stronger energy density, and current margin within the available equipment space.

Voltage
3.6V / 3.7V nominal
Capability
Cell model dependent
Chemistry
21700 Li-ion / NMC by project
RoboticsSmart equipment
18650 cylindrical lithium battery cell for custom OEM battery pack sourcing and pack layout planning
18650CustomStable supply

Custom 18650 Battery Pack

Mature 18650 cylindrical-cell battery pack platform for OEM devices that need stable sourcing, flexible series-parallel design, BMS protection, wiring harnesses, and cost-controlled sampling.

Voltage
Custom voltage
Cell platform
18650 Li-ion / NMC by project
Integration
Cell + BMS + PACK
IoT hardwareMedical devices
Consumer small pouch lithium cell series for compact devices and stable high-rate discharge
OvalPouchPrismatic

Small Pouch Lithium Cells

Oval, pouch, prismatic, and shaped lithium cell options for compact smart devices, portable medical equipment, high-end digital products, and custom OEM battery packs.

Voltage
3.7V typical / model dependent
Capability
3A-20A format dependent
Chemistry
Li-ion / polymer
Smart devicesPortable medical equipment

Product FAQ

18650 Cylindrical Lithium Cell

When is an 18650 cell better than a 21700 cell?

18650 is often better when the device has smaller diameter constraints, mature existing pack layouts, cost-controlled sampling, or supply-chain requirements that favor established cell formats.