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Explore our best-selling custom battery packs trusted by 200+ global clients across 50+ countries.
Custom Li-ion Battery Pack
Any Voltage · Any Shape · OEM/ODM
LiFePO4 Battery Pack
Long Cycle Life · High Safety · Solar & EV Ready
E-Bike Battery Pack
36V / 48V / 52V · Samsung / LG Cells · BMS Built-in
Medical Grade Battery Pack
High Reliability · Full Traceability · Certified
Learn About Custom Battery Pack Manufacturing
What is a Custom Battery Pack?
A custom battery pack is a purpose-built energy storage solution designed for a specific device or application. Unlike off-the-shelf batteries, custom battery packs are engineered to match precise voltage, capacity, form factor, and safety requirements. OEM battery pack manufacturers like COSOMIC TECHNOLOGY COMPANY LIMITED design and produce these packs for electric vehicles, medical devices, industrial robots, energy storage systems, and consumer electronics. The design process includes cell selection, BMS (Battery Management System) configuration, thermal management, enclosure design, and safety certification. We specialize in lithium-ion (Li-ion), lithium iron phosphate (LiFePO4), lithium polymer (LiPo), sodium-ion, solid-state, and semi-solid battery chemistries.
OEM Battery Pack Manufacturing Process
Our OEM battery pack manufacturing process follows a rigorous 7-stage workflow: (1) Requirements Analysis — understanding voltage, capacity, discharge rate, and application constraints. (2) Cell Selection — choosing Grade-A cells from Samsung, LG, Panasonic, CATL, EVE, CALB, or BYD based on performance and budget. (3) BMS Design — custom firmware for overcharge, over-discharge, temperature, and short-circuit protection. (4) Mechanical Design — CAD modeling for housing, connectors, and mounting. (5) Prototyping — sample production in 7–15 days for standard packs. (6) Testing — 100% capacity test, aging cycle, safety test, and visual inspection. (7) Mass Production — scalable to thousands of units per month with consistent quality. Every pack carries CE, UN38.3, RoHS, IEC62619, MSDS, and ISO 9001 certifications.
Industries We Serve
COSOMIC provides custom battery solutions across 8 major industries: AGV & Robotics (automated guided vehicles, AMR, warehouse robots), Medical Devices (patient monitors, surgical robots, portable diagnostic equipment compliant with ISO 13485 and IEC 60601-1), E-Mobility (e-bikes, electric scooters, golf carts, light EVs), Energy Storage (residential wall-mount, commercial container systems, solar off-grid), Industrial Power (forklifts, power tools, construction equipment), Drone & UAV (FPV racing, commercial surveying, agricultural drones), IoT & Wearable (smart devices, GPS trackers, health monitors), and Marine & RV (house batteries, trolling motors, boat electronics). Each application receives a tailored battery pack optimized for its operating environment, cycle life requirements, and safety standards.
Why Choose COSOMIC for Battery OEM/ODM?
COSOMIC TECHNOLOGY COMPANY LIMITED, headquartered in Foshan, Guangdong, China, has been a trusted battery OEM and ODM partner since 2018. With 60+ employees and a 3,000-square-meter ISO-certified facility, we deliver 50,000+ battery packs per month. Our competitive advantages include: direct factory pricing (no middlemen), 7–15 day sample lead times, flexible MOQ starting from 5 units, full OEM branding (logo, label, packaging, NDA protection), multi-language sales support (English, German, French, Spanish, Portuguese, Italian, Russian, Arabic, Turkish, Indonesian), and global shipping to 50+ countries. We maintain long-term relationships with 200+ international clients across Europe, North America, Australia, and Southeast Asia. Our engineering team is available for consultation via WhatsApp, email, or the contact form on this website.
Battery Pack Safety & Certifications
Safety is the cornerstone of our battery pack design. Every custom battery pack undergoes comprehensive safety testing and carries internationally recognized certifications: CE marking for European market entry, UN38.3 for air and sea transport of lithium batteries, RoHS for restricted substance compliance, IEC62619 for industrial lithium battery safety, IEC62133 for portable battery safety, MSDS for material safety documentation, and ISO 9001 for quality management. Medical battery packs additionally comply with ISO 13485 and IEC 60601-1. Our in-house testing laboratory performs thermal runaway testing, crush testing, nail penetration testing, overcharge/over-discharge testing, vibration testing, and altitude simulation. These rigorous procedures ensure our battery packs perform safely in the most demanding applications.
How to Request a Custom Battery Pack Quote
Requesting a custom battery pack quote from COSOMIC is straightforward. You can reach our engineering team through three channels: (1) WhatsApp — send a message to +86 158 8990 0503 with your project requirements. (2) Email — send detailed specifications to oembatterypack002@gmail.com. (3) Contact Form — fill out the inquiry form on our Contact page with your name, company, email, phone, battery voltage, capacity, quantity, and any special requirements. To get an accurate quote faster, please include: target voltage (V), capacity (Ah or Wh), application type, preferred cell brand, dimension constraints, connector type, BMS features needed, and certification requirements. Our engineers typically respond within 2 hours during business hours and within 24 hours for all inquiries. We provide free engineering consultation and can sign an NDA to protect your proprietary designs.
COSOMIC TECHNOLOGY COMPANY LIMITED — Your Trusted Battery Partner
Since 2018, we have been a full-system OEM and ODM manufacturer of custom lithium battery solutions headquartered in Foshan, Guangdong, China. Our product range covers Li-ion, LiFePO4, lithium polymer, sodium-ion, solid-state and semi-solid battery packs for electric vehicles, e-bikes, medical devices, power tools, energy storage systems, drones, IoT devices and industrial robotics. Every battery pack is 100% QC tested and backed by CE, UN38.3, RoHS, IEC62619, MSDS and ISO 9001 certifications. We deliver competitive factory pricing, fast 7–15 day sample lead times, and dedicated after-sales support to clients in over 50 countries worldwide. Contact our engineering team today for a free custom battery pack quote.