What Chung Pak does

Chung Pak Battery Works Ltd., operating under the Vinnic brand internationally and Silver Warrior (银战士) in Mainland China, is a Hong Kong-headquartered battery manufacturer founded in 1980. The company produces a comprehensive portfolio of primary batteries (0% mercury alkaline cylindrical, 0% lead zinc chloride, alkaline manganese, silver oxide, and lithium manganese dioxide button cells), rechargeable batteries (Ni-MH cylindrical and packs, lithium-ion polymer, cylindrical, coin/button, and USB-rechargeable formats, plus lithium-ion power banks), and specialized batteries for extreme temperature (-40°C to 125°C) and medical environments. Maximum production capacity is 1.8 billion batteries per year, supported by ~1,200 employees across the Hong Kong headquarters, the main manufacturing facility in Shunde (Guangdong, China), and a sales office in Shanghai. The company's competitive positioning rests on vertical integration through wholly-owned subsidiary Kyokuto Metal (zinc calot, zinc strips, paper separators, metal/plastic components, tooling), a multi-certification quality stack (ISO 9001:2015, IATF 16949:2016, AEO), and a 45+ year track record with an actively defended Vinnic trademark.

The business operates on a sales-led, hardware-driven model. Chung Pak serves B2B customers (toy manufacturers, household appliance manufacturers, consumer electronics brands, medical device makers) via OEM/ODM arrangements, direct sales from Hong Kong and Shunde, regional agents in Taiwan, Italy, USA, and Greece, and e-commerce flagship stores (Tmall, vinnicpower.com) for consumer channels. Customers are segmented across industrial battery buyers (primary), consumer electronics retailers, and medical device manufacturers. Pricing is not publicly disclosed but the model is volume-driven commodity-plus-specialty manufacturing. Geographic reach spans Hong Kong, Mainland China, Taiwan, Italy, USA, and Greece. The company remains privately held with no external investment signals, and the most recent strategic actions — LiFePO4 automotive battery launch (2025) and medical-grade battery expansion (2026) — suggest directional movement into higher-value, regulated battery segments rather than aggressive scale expansion.

Name

Chung Pak

Legal name

Chung Pak Battery Works Ltd.

Website

https://chungpak.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

1–10 employees

Short description

Chung Pak (Vinnic brand) is a Hong Kong-based battery manufacturer founded in 1980 producing primary, rechargeable, and specialty batteries for toy, appliance, consumer goods, and medical device manufacturers across Greater China, Europe, and the Americas.

Ownership category

akta.pro rank

Product category

Battery Manufacturing

NAICS

Battery Manufacturing (33591)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH) (IMAGAHAA)

akta.pro secondary industries

Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB), Batteries & Battery Packs (Rechargeable/Primary, Device-Specific Packs) (CRACATAG)

Keywords

• Industrial battery manufacturing
• Alkaline zinc chloride batteries
• Lithium-ion rechargeable batteries
• Button cell batteries
• OEM ODM battery production

Headquarters

HQ city

Kowloon City

HQ country

Hong Kong SAR China

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Battery Manufacturing and Sales: Core business producing various types of batteries including alkaline, zinc chloride, button cells, lithium, and rechargeable batteries. Maximum production capacity of 1.8 billion batteries.
2. Diversified Manufacturing: Subsidiary Kyokuto Metal produces paper separators, zinc calot, zinc strips, metal and plastic components, tooling and machineries
3. OEM/ODM Services: Original Equipment Manufacturing and Original Design Manufacturing for other battery brands and electronics manufacturers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

Chung Pak designs, manufactures, and sells a full portfolio of primary and rechargeable batteries — including mercury-free alkaline cylindrical, 0% lead zinc chloride, button cells (alkaline, silver-oxide, lithium-manganese), Ni-MH, and lithium-ion (polymer, cylindrical, button, USB-rechargeable) — plus power banks. Through its subsidiary Kyokuto Metal, it also produces battery components such as paper separators, zinc calot, zinc strips, metal and plastic parts, and tooling/machinery, and provides OEM/ODM services to other battery brands and electronics manufacturers. Maximum production capacity is 1.8 billion batteries annually.

Product overview

Chung Pak (Vinnic) is a Hong Kong-based battery manufacturer established in 1980, operating under the Vinnic brand. The company produces a comprehensive portfolio of batteries including primary batteries (alkaline cylindrical, zinc chloride, button cells in alkaline, silver oxide, and lithium manganese dioxide variants) and rechargeable batteries (Ni-MH and lithium-ion in polymer, cylindrical, and button/coin formats including USB rechargeable models). The portfolio also includes battery components such as paper separators and zinc materials (zinc calot and zinc strips) produced through subsidiary Kyokuto Metal. Production capacity reaches up to 1.8 billion batteries annually with approximately 1,200 employees across Hong Kong and Guangdong facilities.

Differentiator

Problem solved

Functional benefit

Brands

• Vinnic: International brand name for battery products including mercury-free alkaline, zinc chloride, button cells, lithium manganese, and Ni-MH rechargeable batteries.

Products and services

• 0% Mercury Alkaline Cylindrical Battery Series Mercury-free alkaline cylindrical batteries available in D, C, AA, AAA, and 9V sizes with 5-year shelf life and high-density manganese dioxide cathode. Sold to industrial OEM customers and consumer retailers.
• 0% Lead Zinc Chloride Battery Extra/Super Environmentally-friendly zinc chloride batteries with zinc chloride electrolyte, available in D, C, AA, AAA, N, and 9V sizes. Super variant offers longer life and superior performance. For OEM manufacturers and retail markets.
• High Voltage Alkaline Cylindrical Button Cell High voltage alkaline button cells for specialized applications requiring elevated voltage output. For OEMs and specialty electronics manufacturers.
• Alkaline Manganese Dioxide Button Cell Alkaline manganese dioxide button cells available in various sizes including L1560F, L1154F, L1142F and other designations. For OEM applications.
• Silver Oxide Button Cell Silver oxide button cells with zinc anode and potassium hydroxide electrolyte, featuring stable voltage and excellent leakage resistance. Available in sizes including 357F, 386F, 389F, 391F, 394F and others. For OEM watch, instrument, and specialty device manufacturers.
• Lithium Button Cell (Lithium Manganese Dioxide) Compact lithium manganese dioxide button cells with manganese dioxide cathode and lithium metal anode, operating from -20°C to 60°C with low self-discharge. Available in CR927, CR1025, CR1216, CR1220, CR1616, CR1620, CR1632, CR2016, CR2025, CR2032, CR2430, CR2450, CR2477, CR3032, CR123A, CR2 sizes. For OEMs and retail.
• Lithium Manganese Dioxide Battery (High & Low Temperature) Specialized lithium manganese dioxide batteries designed for extreme temperature environments. Low temperature variants operate at -40°C, wide temperature range versions work from -40°C to 80°C, and high temperature versions function from -40°C to 125°C. For industrial and specialty equipment manufacturers.
• Ni-MH Rechargeable Battery (Cylindrical) Nickel-metal hydride rechargeable batteries with stable discharge voltage, 500 charge-discharge cycles, and no memory effect in cylindrical form. For OEM applications.
• Ni-MH Rechargeable Battery Pack Custom-assembled Ni-MH battery packs configured to specific capacity, size, and voltage requirements for industrial and consumer applications. For OEM manufacturers.
• Polymer Lithium-ion Rechargeable Battery Lithium-ion polymer rechargeable batteries with lithium cobalt oxide cathode, available in models PL421422, PL302022, PL501045 and other configurations. For OEM electronics manufacturers.
• Rechargeable Li-ion Cells (Coin/Button Type) Coin-type rechargeable lithium-ion cells with lithium cobalt oxide cathode and lithium hexafluorophosphate electrolyte. Available in ICR1254, ICR1454, ICR1654 configurations. For OEM applications.
• Cylindrical Lithium-ion Rechargeable Battery Cylindrical lithium-ion batteries with nickel cobalt manganese oxide cathode and graphite anode, featuring high energy density, high working voltage, low self-discharge, and long cycle life. For OEM applications.
• Power Bank (Lithium-ion Mobile Power Source) Portable power banks with 0% mercury, lead, and cadmium, 1000+ charge-discharge cycles, built-in intelligent protection against overcharging and short circuits, designed for Apple products and most mobile devices. For retail consumers and OEM partners.
• USB Lithium-Ion Rechargeable Battery USB rechargeable lithium-ion batteries with 1000-3000 cycle life, multi-layer protection (overcharge, overvoltage, overcurrent, overdischarge, overheating, short circuit, overpower, leakage), available in AA, AAA, C, D, 9V, and 18650 sizes with self-discharge rate ≤8% after 30 days. For retail consumers and OEM partners.
• Paper Separator Paper separators for dry cell batteries, mercury-free, suitable for zinc chloride batteries and high-capacity environmentally-friendly mercury-free zinc-manganese batteries. Available for R03, R6, R14, R20, R9V battery sizes. For internal use and external battery manufacturers.
• Zinc Calot (Zinc Granules) Battery zinc granules in environment-friendly variants with ultra-low harmful impurities meeting international environmental standards, and ordinary variants for zinc-manganese dry cell shell manufacturing. For internal use and external battery manufacturers.
• Zinc Strip Environment-friendly zinc strip coils with minimal harmful impurities meeting international environmental regulations, smooth surface, good deformability, electroplating capability, and corrosion resistance. Used for 9V stacked batteries, hardware, electrical parts, and decorative materials. For external manufacturers.
• Other Battery Components (Metal, Plastic, Tooling) Metal components, plastic components, and tooling/machinery for battery manufacturing, produced by subsidiary Kyokuto Metal (HK) Limited. For internal use and external manufacturers.

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core and regional.

• Kyokuto (Fo Shan) Metal Works Ltd.coreStrategic or Co-development Partner · 1 March 2006Factory established in March 2006 in Foshan, China for zinc and metal component manufacturing. Passed ISO 9001:2000 certification.
• Kyokuto Metal (HK) Limited Joint VenturecoreStrategic or Co-development Partner · 1 March 1994Joint venture between Chung Kong Industrial Co., Ltd and Honzo (HK) Ltd established in March 1994, specializing in manufacturing battery zinc calot, zinc strip, metal and plastic components, tooling and machineries. Became wholly-owned in May 2005.
• New Pan Eastern Corporation (Taiwan Agent)regionalChannel Partner/ Reseller/ DistributorTaiwan regional agent distributing Vinnic batteries. Located at 12/F, No. 33, Sec. 2, Chung Shan North Road, Taipei.
• Menin srl (Italy Agent)regionalChannel Partner/ Reseller/ DistributorItaly regional agent distributing Vinnic batteries. Located at Via Lavello, 53, 37125 Verona, Italy.
• Evergreen (C.P.) U.S.A. Inc.regionalChannel Partner/ Reseller/ DistributorUSA regional agent distributing Vinnic batteries. Located at 338 North Canal Street Suite 7-8, South San Francisco, CA 94080, U.S.A.
• Christos Dissios S.A. and Christos Dissios - A. & Th. Pandi LtdregionalChannel Partner/ Reseller/ DistributorGreece regional agents distributing Vinnic batteries. Located at 4th Areteou str. 11522, Ampelokipi, Athens, Greece.

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Market position

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/vinnic.battery
• Instagraminstagram.com/vinnichk

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Chung Pak