
Shenzhen Headquarters & Base
Building 3, Huancheng Industrial Park, Dalang North Road, Dalang Street, Longhua District, Shenzhen

Battery Highlights
Product Overview The EPT-21700-4800mAh cylindrical lithium battery for flashlights features a high-capacity cell design and a stable electrochemical system, providing long-lasting and reliable power output for high-lumen flashlights, tactical flashlights, and professional lighting equipment. As a 21700 cell that balances capacity and safety, this product is well suited for B2B lighting applications with demanding requirements for runtime and operational stability. Applications * Outdoor Lighting: Suitable for high-lumen flashlights used in extended outdoor activities such as camping, night fishing, and hiking. * Professional Operations: Ideal for industrial applications such as inspection, maintenance, and security operations where dependable illumination is essential. * Emergency Backup: Suitable as a high-capacity backup power solution for home emergency use and in-vehicle applications, helping ensure reliable and continuous lighting when needed. Quality Assurance EPT-Battery specializes in battery solutions and subjects this product to rigorous incoming material inspection, in-process quality control, and outgoing inspection procedures. Key parameters, including cell capacity, voltage, and internal resistance, are carefully controlled to ensure consistency and reliability, providing dependable power support for your lighting equipment.
Specifications
| Nominal Voltage | 3.7V |
|---|---|
| Nominal Capacity | 4800mAh |
| Charge Cut-off Voltage | 4.2V |
Our Promise
Four self-owned production bases and decades of battery expertise — delivering outstanding capacity, compliance assurance and all-round support for your products.

Building 3, Huancheng Industrial Park, Dalang North Road, Dalang Street, Longhua District, Shenzhen

No. 3 Liangneng Road, High-Tech Industrial Park, Shejiang Town, Meixian District, Meizhou

No. 166 Cuidun Road, High-Tech Zone, Jianhu County, Yancheng, Jiangsu

Road No. 1, Luong Son Industrial Park, Luong Son Commune, Phu Tho Province, Vietnam
Contact Us
Reach us by phone, email or the form below — we typically reply within one business day.
Headquarters
Building 3, Huancheng Industrial Park, Dalang North Road, Dalang Street, Longhua District, Shenzhen
Meizhou Base
No. 3 Liangneng Road, High-Tech Industrial Park, Shejiang Town, Meixian District, Meizhou
Jiangsu Base
No. 166 Cuidun Road, High-Tech Zone, Jianhu County, Yancheng, Jiangsu
Vietnam Base
Road No. 1, Luong Son Industrial Park, Luong Son Commune, Phu Tho Province, Vietnam
Over 23 years of deep expertise in the battery industry, with revenue surpassing RMB 800 million in 2025, industry-leading cell technology and strong engineering R&D capabilities.
Every product passes 36 inspection procedures with strict process control — ensuring consistent quality for every unit that leaves our factories.
A CNAS-accredited testing laboratory, rigorous internal standards, and a compliance framework backed by major international certifications.
Self-owned production bases in Shenzhen, Meizhou, Jiangsu and Vietnam — daily output of 800,000 Ni-MH cells, 600,000 Ah of lithium cells and 300,000 battery packs.
Global product liability insurance coverage, serving 1,000+ clients with localized support across North America, Europe, Japan, Korea and China.
Pouch Li-Polymer, cylindrical lithium, Ni-MH and Ni-Zn cells for consumer electronics, energy storage and industrial applications.
Dedicated PACK production lines offering custom battery assembly and integration services to meet the battery system needs of all kinds of end products.
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