Rugged & specialty packs
For field equipment, communication devices, emergency systems, low-temperature use, and harsh operating environments.
Low temperatureRugged housingCustom connector
About Guangyunlai Technology
Guangyunlai Technology Co., Ltd. builds custom battery packs for demanding OEM projects.
Guangyunlai Technology Co., Ltd. operates batteriescustom.com as a focused custom battery platform for global buyers. We help teams turn voltage, capacity, runtime, size, connector, protection, and certification requirements into manufacturable Li-ion, LiFePO4, and specialty battery pack solutions.
Built around your device
Battery chemistry, BMS, enclosure, cabling, connector, label, test plan, and export packaging are matched to the application.
OEMCustom battery pack projects
Li-ionNMC, polymer, cylindrical cells
LiFePO4Long-cycle industrial power
BMSProtection and smart communication
Who We Are
A practical engineering partner for custom battery sourcing.
We serve overseas importers, equipment manufacturers, integrators, and brand owners who need reliable battery packs without managing every cell, PCB, enclosure, and compliance detail alone.
Engineering first
Projects begin with real operating conditions: load profile, charging method, temperature range, mechanical limits, protection logic, and certification target.
Manufacturing aware
Design choices are checked against assembly consistency, cell supply, BMS availability, tooling, labeling, and repeat-order production needs.
Export ready
We support packaging, labels, documents, and shipping coordination for international battery procurement teams.
Facilities & Testing
Workshop capacity and laboratory verification in one supply workflow.
From automated battery production equipment to electrochemical analysis and safety testing, our facilities help customers move from sample confirmation to stable batch delivery.
What We Build
Battery pack solutions from compact devices to high-power systems.
Buyers come to us when standard batteries do not match the device. We develop the pack around the product, the operating environment, and the procurement plan.
Industrial LiFePO4 packs
Stable long-cycle packs for robotics, AGV, cleaning machines, solar storage, UPS, marine, and mobile equipment.
12V-72VSmart BMSLong cycle life
High-power custom systems
Battery modules and packs for traction, energy storage, construction machinery, marine power, and special equipment.
High voltageLarge capacityProject based
How We Work
From battery requirements to repeatable production.
After specifications are received, our team reviews the technical risk, confirms a practical structure, prepares samples, and moves approved designs into repeatable production.
Requirement review
Voltage, capacity, current, runtime, size, environment, certification, and target cost are checked first.
Pack design
Cell model, series/parallel structure, BMS, wiring, connector, enclosure, and charging method are selected.
Sample build
Prototype packs are assembled for customer evaluation, fit checking, firmware logic, and performance feedback.
Testing
Capacity, internal resistance, aging, charge-discharge behavior, insulation, protection, and packing checks are completed.
Production
Approved designs move into batch assembly with labeling, export packaging, and repeat-order file control.
Buyer Confidence
Built for B2B procurement details.
We know battery sourcing requires more than a catalog price. Buyers need fast technical feedback, clear documents, stable component choices, and honest communication when a requirement affects safety, cost, lead time, or certification.
- Custom voltage, capacity, current, enclosure, connector, and communication options
- Support for Li-ion, LiFePO4, polymer, cylindrical, and specialty cell formats
- Project communication for OEM, ODM, importer, and engineering teams
- Export packing, labeling, shipping document, and repeat-order support
Quality Control
Checks that matter before shipment.
Quality work is built into each stage so the final pack is not only functional, but suitable for transportation, installation, and long-term use.
Incoming cell sortingVoltage, internal resistance, capacity, batch consistency, and appearance checks.
BMS validationOvercharge, over-discharge, short-circuit, over-current, balancing, and communication checks.
Assembly inspectionWelding, insulation, wiring, polarity, label, connector, and structural checks.
Aging and discharge testsCapacity confirmation, load behavior, voltage curve, and abnormal heat review.
Applications
Industries we help power.
Guangyunlai Technology Co., Ltd. focuses on custom battery packs for real devices, equipment, and systems where a standard off-the-shelf battery is not enough.
Robotics & AGVReliable rechargeable packs for mobile robots, warehouse vehicles, and autonomous equipment.
Medical & instrumentsStable power for portable diagnostic, monitoring, testing, and specialty instruments.
Energy storageLiFePO4 modules and battery packs for UPS, solar, backup, and commercial storage projects.
Outdoor equipmentRugged battery packs for marine, field communication, rescue, security, and industrial devices.
Need a battery pack designed around your product?
Send drawings, target voltage, capacity, load current, size limits, connector type, charging method, and quantity plan. Our team will review the project and suggest a practical battery solution.