18650 battery pack
Mature sourcing, smaller diameter constraints, existing mechanical compatibility, and cost-controlled sampling.
Mature sourcingSmaller diameterFlexible layoutsLower sampling risk
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Custom OEM Packs
Custom 18650 Lithium Battery Pack for OEM Devices
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.
18650CustomStable supply
Certification support
UN38.3MSDS
Browsing path: Custom OEM / ODM Lithium Battery Packs
Quick shortlist specs
Full specs are confirmed in the technical table
Product overview
Product description
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.
Cylindrical cell pack selection
How to choose between 18650 and 21700 battery packs.
Both 18650 and 21700 cells can support custom cylindrical battery packs. The choice depends on cell capacity, space limits, parallel count, sourcing maturity, cost, thermal behavior, and equipment envelope.
21700 battery pack
Higher cell capacity, fewer parallel cells, stronger energy density, and a larger current margin.
Higher capacityFewer parallel cellsStronger energy densitySpace review needed
Cylindrical pack RFQ inputs
VoltageCapacityContinuous currentPeak currentRuntime targetEquipment spaceWeight limitConnectorHarness lengthChargerBMS communicationCertification marketAnnual quantity
Download Technical Datasheet & Drawing
Custom 18650 Battery Pack
Leave your email and project requirement. We will treat the datasheet request as a high-intent RFQ and follow up with drawings and matching advice.
Product category path
Continue through the product category path.
Accessories
Capacity upsell & related products
Protection PCB / BMS
Cell holder
Nickel strip
Harness
Connector
21700CustomBMS
Custom 21700 Battery Pack
Custom 21700 cylindrical lithium battery pack for OEM equipment that needs higher cell capacity, series-parallel architecture, enclosure, connector, BMS, communication, and validation planning.
- Voltage
- Custom voltage
- Cell platform
- 21700 Li-ion / NMC by project
- Integration
- Cell + BMS + PACK
PouchThin profileCustom shape
Custom Pouch Battery Pack
Thin-profile pouch lithium battery pack platform for compact OEM devices, medical products, smart hardware, and shaped enclosures that require cell thickness, tab direction, protection PCB, and connector matching.
- Voltage
- Custom voltage
- Cell platform
- Pouch Li-ion / NMC / polymer by project
- Integration
- Cell + BMS + PACK
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
Product FAQ
Custom 18650 Battery Pack
When should an OEM pack use 18650 instead of 21700 cells?
18650 is often useful when the project needs mature sourcing, smaller diameter constraints, existing mechanical compatibility, or lower initial sampling risk. Final selection should compare current, runtime, space, certification target, and annual volume.
Can 18650 battery packs include BMS and connector customization?
Yes. Custom 18650 packs can include protection PCB or smart BMS, NTC sensing, cell balancing, wire harnesses, connector position, charger matching, labels, and shipment document planning.