18650 battery pack
Mature sourcing, smaller diameter constraints, existing mechanical compatibility, and cost-controlled sampling.
Mature sourcingSmaller diameterFlexible layoutsLower sampling risk
Product image set
Custom OEM Packs
Custom 21700 Lithium Battery Pack for OEM Equipment
Custom 21700 cylindrical lithium battery pack for OEM equipment that needs higher cell capacity, series-parallel architecture, enclosure, connector, BMS, communication, and validation planning.
21700CustomBMS
Certification support
UN38.3MSDS
Browsing path: Custom OEM / ODM Lithium Battery Packs
Quick shortlist specs
Full specs are confirmed in the technical table
Applications
Description & Applications
Custom 21700 cylindrical lithium battery pack for OEM equipment that needs higher cell capacity, series-parallel architecture, enclosure, connector, BMS, communication, and validation planning.
Medical devicesRoboticsIoT hardware
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 21700 Battery Pack
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.
Category and application paths
Continue through the product category and application paths.
Product category
Custom OEM / ODM Lithium Battery Packs
Application-specific custom lithium battery pack products built around cell format, series-parallel architecture, enclosure, connector, BMS, communication protocol, certification targets, and production volume.
View category products →Application path
Industrial, Logistics & Service Equipment
Rugged lithium batteries for forklifts, AGV/AMR fleets, aerial work platforms, service equipment, and industrial carts.
View application solution →Application path
Telecom, UPS, Smart & Medical Devices
Battery packs for telecom base stations, UPS backup, service robots, portable medical equipment, IoT hardware, smart home devices, and connected devices.
View application solution →Application path
Power Tools & Cleaning Appliance Batteries
High-discharge packs and small-format cells for cordless power tools, vacuum cleaners, sweepers, floor cleaning robots, personal care appliances, and compact motor-driven devices.
View application solution →Accessories
Capacity upsell & related products
BMS
Harness
Connector
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
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
WearablesMedical devices
PolymerHigh-rateOEM
Custom Polymer Battery Pack
Custom lithium polymer battery pack platform for high-rate or lightweight OEM equipment, including UAV, tools, RC models, pulse-power devices, and portable systems that need discharge-rate, connector, compression, and thermal review.
- Voltage
- Custom voltage
- Cell platform
- High-rate LiPo / polymer by project
- Integration
- Cell + BMS + PACK
UAV and dronesPower tools
Product FAQ
Custom 21700 Battery Pack
When should an OEM pack use 21700 cells instead of 18650 cells?
21700 cells are often selected when the pack needs higher cell capacity, fewer parallel cells, improved energy density, or a larger current margin within the available equipment space. The final decision should compare current, runtime, cell availability, enclosure size, and certification target.
What information is needed for a custom 21700 battery pack quote?
Useful inputs include voltage, capacity, continuous and peak current, runtime target, equipment space, connector, charger, BMS communication, operating temperature, certification market, and expected annual quantity.