18650 battery pack
Mature sourcing, smaller diameter constraints, existing mechanical compatibility, and cost-controlled sampling.
Mature sourcingSmaller diameterFlexible layoutsLower sampling risk
Custom OEM/ODM Packs
Custom 18650 Lithium Battery Pack for OEM Devices
Mature 18650 cylindrical-cell battery packs for OEM devices that need stable sourcing, flexible series-parallel design, BMS protection, harness and connector customization, and cost-controlled sampling.
18650Energy / power / high-rateStable supply
Certification support
UN38.3 document reviewMSDS / SDS reviewTarget-market documentation review
Product image set
Quick shortlist specs
Full specs are confirmed in the technical table
Product overview
Product description
Mature 18650 cylindrical-cell battery packs for OEM devices that need stable sourcing, flexible series-parallel design, BMS protection, harness and connector customization, and cost-controlled sampling.
Cylindrical cell pack selection
How to choose among 18650, 21700, and 32700 battery packs.
All three cylindrical routes support custom packs. The choice depends on chemistry, cell capacity, space limits, parallel count, rate capability, cycle life, cost, 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
32700 LFP battery pack
Safety, thermal stability, long cycle life, and 12.8V / 25.6V LiFePO4 module platforms.
LiFePO4Long cycle12.8V / 25.6VSafety first
Cylindrical pack RFQ inputs
Voltage platformCapacityContinuous currentPeak currentRuntime targetCycle 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
Cell holder and nickel strip
Protection PCB / BMS
Harness and connector
Matched charger review
21700Energy / power / high-rateBMS / communication
Custom 21700 Battery Pack
Custom 21700 cylindrical lithium battery packs for OEM equipment that need higher cell capacity, fewer parallel groups, series-parallel architecture, enclosure, connector, BMS, and validation planning in one project path.
- Voltage
- 6S / 12S / custom examples
- Cell platform
- 21700 Li-ion / NMC by project
- Integration
- Cell + BMS + PACK
32700LiFePO412.8V / 25.6V class
Custom 32700 LiFePO4 Battery Pack
Custom 32700 LiFePO4 cylindrical OEM pack design for safer long-life 12.8V / 25.6V module platforms, with capacity, BMS, and enclosure confirmed by project.
- Voltage
- 12.8V / 25.6V / custom examples
- Cell platform
- 32700 LiFePO4
- Integration
- Cell + BMS + PACK
18650Energy / power / high-rateCell matching
18650 Cylindrical Lithium Cell
18650 cylindrical lithium cell supply for OEM buyers who need mature sourcing, capacity and discharge class shortlists, IR matching, batch traceability, and flexible series-parallel building blocks.
- Voltage
- 3.6V / 3.7V nominal
- Capability
- About 10-60A by class
- Chemistry
- 18650 Li-ion / NMC by project; LFP option review
Product FAQ
Custom 18650 Battery Pack
When should an OEM pack use 18650 instead of 21700 cells?
Choose 18650 when mature sourcing, smaller diameter, existing holders, or lower initial sampling risk matter more. Move to 21700 when fewer parallels, higher cell capacity, or larger current margin are the priority.
Which project stage fits pack assembly service?
Choose Custom OEM pack design while cell selection, architecture, BMS, enclosure, connector, or validation still need engineering. Choose battery pack assembly service when the specification or drawings are ready for controlled production.
What information is needed for a custom 18650 battery pack quote?
Share voltage, capacity or runtime, continuous and peak current, equipment envelope, connector, charger, BMS needs, operating temperature, certification market, and annual quantity.
When should buyers request bare 18650 cells instead?
Request bare cells when your team already controls pack layout, welding or holders, BMS, and validation. Use this page when you need pack-level OEM design.
How should energy, power, and high-rate 18650 classes be shortlisted?
Start from continuous and peak current, then check runtime and thermal rise. Energy-class cells fit compact runtime-first packs; power-class cells balance capacity and current; high-rate cells need connector, wire gauge, and heat-path review before sampling.
Can 18650 battery packs include BMS and connector customization?
Yes. Custom 18650 packs can include protection PCB or smart BMS, NTC sensing, cell balancing, harnesses, connector position, charger matching, labels, and shipment document planning.