Your Premier China-Based OEM & ODM Partner for Custom Lithium Battery Packs, Cells, and Modules.
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COSOMIC TECHNOLOGY COMPANY LIMITED is a full-system OEM/ODM manufacturer of custom lithium battery packs, headquartered in Sanshui District, Foshan, Guangdong, China. We specialize in Li-ion, LiFePO4, NiMH and Lithium Polymer battery pack solutions for global clients across the e-mobility, energy storage, medical, industrial and consumer electronics industries.
From single prototype to large-scale OEM production, we deliver precision-engineered battery packs tailored to your exact voltage, capacity, form-factor and certification requirements — backed by CE, UN38.3, RoHS and IEC62619 international compliance.
6+ years of precision manufacturing, trusted by 200+ global clients across 50+ countries.
Custom cell selection, BMS, housing, firmware & branding — built to your exact specs from prototype to mass production.
Supplying clients across Europe, North America, Southeast Asia, Middle East and Australia with CE & UN38.3 certified packs.
Every pack undergoes capacity test, aging cycle, BMS function, insulation and final safety inspection before shipment.
Samples ready in 7–15 days. Mass production lead time 20–35 days. Flexible MOQ starting from 10 units.
Our OEM battery packs power products across Europe, North America, Asia-Pacific, Middle East and Africa. Export-ready with all major international certifications.
www.oembatterypack.comPrecision-engineered electronics for energy storage, power management and EV applications.
Showing 8 of 33 Products
Browse our full catalog — 8 series, 27 SKUs, CE / UN38.3 certified.
Trusted Partners
200+
Global Clients Served
50+
Countries Exported
1M+
Battery Packs Shipped
98%
Client Retention Rate
From electromobility to medical devices, we engineer custom battery packs tailored to the unique demands of each application.
High-density, swappable Li-ion packs for e-bikes, scooters, and LEVs.
Scalable LiFePO4 modules for residential and commercial ESS.
UL/ISO certified, high-reliability packs for ventilators and portable monitors.
High-discharge rate 18650/21700 packs with robust mechanical housing.
Custom voltage 24V-48V packs with smart BMS communication.
Ultra-thin LiPo pouch cells for wearables and IoT.
High-density, swappable Li-ion packs for e-bikes, scooters, and LEVs.
Scalable LiFePO4 modules for residential and commercial ESS.
UL/ISO certified, high-reliability packs for ventilators and portable monitors.
High-discharge rate 18650/21700 packs with robust mechanical housing.
Custom voltage 24V-48V packs with smart BMS communication.
Ultra-thin LiPo pouch cells for wearables and IoT.
From concept to mass production — we build custom cell battery packs precisely to your voltage, capacity, size, and application specifications.
Our Process
Full custom battery pack design — cell selection, BMS configuration, housing, firmware, and branding.
Flexible minimum order quantities starting from small prototype runs. Scale up seamlessly to mass production.
Every battery pack passes 100% capacity test, aging cycle test, safety test, and final visual inspection.
Battery packs certified for CE, UN38.3, RoHS, and IEC62619 to ensure worldwide market compliance.
Send us your specs and get a quote within 24 hours.
From e-bike OEMs in Europe to solar farms in Australia — see how global clients trust COSOMIC custom battery packs.
48V 17.5Ah E-Bike Battery Pack
12,000 pcs delivered in 3 batches over 8 months. Zero field failures reported. Client expanded order by 40% in Year 2.
48V 17.5Ah E-Bike Battery Pack
Challenge
Required IP65-rated battery with custom Hailong mounting, Samsung 21700 cells, and EN15194 certification for EU market entry.
Result
12,000 pcs delivered in 3 batches over 8 months. Zero field failures reported. Client expanded order by 40% in Year 2.
12,000+
Units Delivered
< 0.1%
Defect Rate
22 days
Lead Time
Join 200+ global clients who trust COSOMIC for their custom battery pack needs
Start Your Project200+ OEM clients across 50+ countries rely on COSOMIC TECHNOLOGY COMPANY LIMITED for consistent quality, fast delivery, and genuine engineering support.
“The most professional ODM service we’ve experienced. Fast prototyping and flawless BMS integration. From spec submission to approved sample in under 12 days — that kind of speed is a genuine competitive advantage for us.”
Jennifer R. 🇺🇸
Procurement Manager · US Medical Startup · United States
Clients from these countries & more
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China produces over 70% of the world's lithium batteries. Here's why global OEM brands choose Chinese manufacturers — and why COSOMIC stands out among them.
Achieve 30% cost savings through integrated supply chains.
True OEM/ODM means your design, your BMS, your brand.
Every pack meets CE, UN38.3, and MSDS standards.
Engineering samples in 10 days, mass production in 25 days.
A practical comparison for global OEM buyers
Criteria
China OEM (COSOMIC)
Western Manufacturer
Unit Cost
Competitive
High
Lead Time (Sample)
7–15 days
4–8 weeks
MOQ Flexibility
From 10 pcs
500+ pcs
OEM Customization
Full custom
Limited
Certifications
CE, UN38.3, RoHS
CE, UL
Quality Control
100% tested
100% tested
Communication
English support
Native
Not all Chinese manufacturers are equal. Here's what sets COSOMIC apart.
CE & UN38.3 Certified
ISO 9001 Factory
200+ Global Clients
6+ Years Experience
98% Repeat Order Rate
English Sales Team
Join us at the Global Smart Energy Expo in Frankfurt this April to explore our latest LiFePO4 battery systems and grid-scale energy storage solutions.
We are proud to announce the launch of our third-generation 100Ah LiFePO4 battery with 6000+ cycle life and built-in smart BMS for residential and commercial applications.
Following rigorous third-party testing, our battery systems have successfully obtained UN38.3 and IEC62619 certifications, meeting the strictest international safety standards.
We have formalized a strategic distribution agreement covering 12 European countries, bringing our high-voltage EV battery packs to new automotive markets.
We are heading to South Korea for InterBattery 2026, Asia's premier battery trade show, to showcase our latest cylindrical Li-ion and prismatic LiFePO4 OEM packs.
At CES 2026, we presented our thinnest-ever custom polymer battery packs for wearables and portable devices, drawing interest from U.S. consumer electronics brands.
We expand our EV battery lineup with a 72V 40Ah Li-ion pack featuring active air-cooling, 150A peak discharge, and full CAN Bus integration for light electric vehicles.
Our new Smart BMS 4.0 introduces AI-driven cell health prediction, fault pre-warning, and cloud-based fleet monitoring for commercial battery deployments.
Our complete battery pack catalog has successfully passed its annual CE and RoHS recertification audit, ensuring continued compliance for European market entry.
New distribution partnerships in Thailand, Vietnam, and Indonesia will bring COSOMIC custom battery packs closer to the rapidly growing ASEAN energy storage market.
A 2-year joint research program will focus on next-generation solid-state electrolyte integration and fast-charging algorithms for lithium battery packs.
Access our product catalogs, technical datasheets, certifications, and compliance documents.
8 files available
Full product line brochures and specification sheets
12 files available
ISO, CE, UL, RoHS, FCC and other compliance documents
24 files available
Detailed technical datasheets for all product models
16 files available
Installation, operation, and maintenance guides
6 files available
Third-party lab test reports and quality verifications
5 files available
Product demonstration and installation tutorial videos
Submit your battery requirements and we'll respond within 24 hours with a customized solution.
WhatsApp / WeChat / Tel
+86 158 8990 0503
oembatterypack002@gmail.com
Factory Address
Building 2, Floor 2, Zone B, Shihu Industrial Area, Yundonhai St., Sanshui District, Foshan, Guangdong, China
Business Hours
Mon – Sat: 9:00 AM – 6:00 PM (CST)
Certifications
Fill in your requirements and our team will prepare a tailored quote for you.
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