Custom Battery Pack - mylionbattery

Custom 18650 / 21700 Lithium Battery Pack for OEM Devices

MYLION designs and manufactures custom cylindrical lithium battery packs for B2B OEM devices. We support 18650, 21700 and LiFePO4 battery pack development with BMS protection, connector, wire, housing, charger matching, certification application and mass production support.

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What Can Be Customized

A custom battery pack is not only about voltage and capacity. MYLION evaluates cell type, BMS, connector, wire, housing, charger, certification and mass production feasibility according to your device requirement.

Cell Type

Evaluate 18650, 21700, or LiFePO4 cells by density, current, size, and availability.

Voltage & Capacity

Configure series and parallel cells for required voltage, capacity, current, and runtime.

BMS Protection

Match BMS protection for overcharge, over-discharge, over-current, short-circuit.

Connector & Wire

Customize connectors, cable length, wire direction, and terminals for device.

Housing & Structure

Select shrink wrap, brackets, holders, or cases based on specific project requirements.

Charger Matching

Match charging voltage, and charger options with battery and BMS requirements.

Label & Packaging

Support OEM labels, warnings, cartons, and packaging design for custom B2B projects.

Certification Documents

Support certification applications and shipping documents for target markets.

Product Categories

MYLION does not try to present hundreds of unrelated battery models. We focus on practical B2B battery product categories that match real backup power, solar outdoor, golf cart and OEM device projects.

12V LiFePO4-Batterie

For backup power, security systems, portable equipment and selected industrial applications. Suitable for compact 12V LiFePO4 battery projects.

View 12V Battery

48V / 51.2V Rack Battery

For telecom backup, rack-mounted energy storage and selected industrial backup projects requiring higher-voltage battery systems.

View 48V Rack Battery

51.2V 100Ah Golf Cart Battery

51.2V 100Ah Golf Cart Battery For 48V lead-acid replacement, golf cart fleet upgrade, distributors and OEM battery projects

View Golf Cart Battery

Solarstrom-Set

For solar street lights, garden lights, security cameras, CCTV monitoring and outdoor low-power projects requiring solar charging and backup support Service.

View Solar Power Kit

High-Value OEM Applications

Medical & Healthcare Devices

Portable medical devices, diagnostic equipment, rehabilitation devices and healthcare electronics.

Industrial IoT & Smart Devices

IoT gateways, asset trackers, smart meters, wireless terminals, remote sensors and monitoring devices.

Garden Tools & Portable Equipment

Selected pruning tools, sprayers, portable work equipment and professional portable tools.

Security & Monitoring Equipment

Alarm systems, portable cameras, access control devices, remote monitoring equipment.

Quality & Certification Control

Quality Control and Mass Production Support

From sample development to mass production, MYLION supports B2B custom battery pack projects with engineering review, sample testing, production follow-up, 100% inspection before shipment and batch traceability according to project requirements.

Engineering Review Before Production

Review voltage, current, runtime, size, BMS, connector, charger and certification requirements before sample or production.

Sample Testing Support

Samples can be checked through electrical test, BMS function test, charging/discharging test and appearance inspection.

100% Inspection Before Shipment

Every MYLION battery pack is 100% inspected before shipment according to project requirements, quality standards, and specifications.

Traceability Control

Cell batch, BMS, production record, inspection result and shipment batch can be managed according to project needs.

Production Follow-Up

Production status, quality inspection and packing can be followed for B2B project delivery.

Long-Term Repeat Order Support

MYLION supports product updates, repeat orders, documentation and long-term supply cooperation.

Häufig gestellte Fragen

Q: What information should I provide for a custom battery pack project?

A: Please provide device application, working voltage, continuous current, peak current, target runtime, battery size limit, connector requirement, charging method, certification requirement, estimated quantity and destination country. Device photos or drawings are helpful.

Q: Should I choose 18650 or 21700 cells?

A: 18650 cells are suitable for mature designs, compact structures and cost-effective projects. 21700 cells may be better for higher capacity, longer runtime and fewer-cell pack designs. Final selection depends on size, current, energy and supply requirement.

Q: Can MYLION customize the BMS?

A: MYLION can support BMS matching according to voltage, current, protection requirement, charging method and application condition. Smart BMS or communication functions can be evaluated according to project requirement.

Q: Can you customize connector, wire and housing?

A: Yes. Connector, wire length, cable direction, label, packing and selected housing customization can be supported according to project quantity and technical requirement.

Q: Can MYLION help apply for battery certifications?

A: Yes. MYLION can help customers apply for UL, IEC62133, CB, CE, RoHS, FCC, UKCA, UN38.3 and related documents according to project requirements.

Q: Do you support medical device battery packs?

A: MYLION can develop battery packs for selected medical and healthcare devices according to safety, documentation and compliance requirements. Final suitability should be evaluated based on the device and required standard.

Q: What is the MOQ for custom battery packs?

A: MOQ depends on cell type, BMS, connector, housing, tooling, certification and production requirement. Standard or simple pack samples may be easier to arrange than fully customized projects.

Q: Do you provide samples before mass production?

A: Sample arrangement can be evaluated after technical requirements are confirmed. Customer testing in the real device is recommended before mass production.