Top 10 AGM Battery Manufacturers in China 2026: Buyer's Guide
China produces 70%+ of the world's AGM batteries. This buyer's guide profiles 10 verified AGM battery manufacturers — Shuangdeng, Tianneng, Ritar, Leoch, Naradex and more — with factory specs, certifications, and sourcing tips.
Why China Dominates AGM Battery Manufacturing
China manufactures over **70% of the world's AGM (Absorbent Glass Mat) batteries**, with annual production exceeding 200 million units across hundreds of factories concentrated in Zhejiang, Guangdong, and Jiangsu provinces. For distributors, system integrators, and OEM buyers sourcing AGM batteries for UPS, solar, or telecom applications, China is not just an option — it is where the industry lives.
AGM (Absorbent Glass Mat) batteries are a sub-category of VRLA (Valve-Regulated Lead-Acid) technology. The electrolyte is immobilized in a fibreglass mat separator, allowing true sealed operation, low internal resistance, and high discharge current capability. These properties make AGM batteries the default choice for:
- **UPS systems** (data centres, hospitals, telecom base stations) - **Solar energy storage** (off-grid, hybrid, commercial rooftop) - **Telecom infrastructure** (BTS, DSLAM, core switching) - **Standby power** (industrial equipment, emergency lighting)
Yet with hundreds of factories competing on price alone, identifying genuinely capable manufacturers requires technical due diligence. This guide profiles 10 verified AGM manufacturers — their factory scale, product range, certifications, and the specific AGM applications they do best.
China AGM Manufacturing Geography
Comparison Table: Top 10 AGM Battery Manufacturers in China
Detailed Manufacturer Profiles
1. Shuangdeng Group (双登集团) — Nantong, Jiangsu
Shuangdeng (also marketed as Shoto) is one of China's largest stationary battery groups. Founded in 1990, they have grown into a vertically integrated manufacturer covering lead-acid AGM, OPzV tubular gel, lithium iron phosphate, and flow batteries under the same roof.
AGM product strengths: - 2V cells from 200Ah to 3,000Ah — the backbone of utility-scale UPS and telecom installations - Stationary front-access AGM (FT series) for confined telecom cabinets - IEC 60896-21/22 type-tested at independent labs (Intertek, SGS) - Long design life models rated 12 years at 25°C float service
Best suited for: Large-scale telecom infrastructure, utility UPS systems, industrial standby applications requiring 2V cell strings.
Export note: Shuangdeng products are deployed across China's state telecom carriers (China Mobile, China Unicom) and exported through authorised distributors in Southeast Asia, the Middle East, and Africa.
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2. Tianneng Battery (天能集团) — Changxing, Zhejiang
Tianneng is China's largest lead-acid battery group by revenue, listed on the Hong Kong Stock Exchange (HK: 0819). Their scale is difficult to overstate — annual capacity exceeds 80 GWh across multiple battery chemistries.
AGM product strengths: - High-volume 12V SLA batteries (4Ah–200Ah) at competitive price points - EV-grade AGM packs for electric two-wheelers and light vehicles - Increasingly competitive in stationary AGM through capacity expansion
Best suited for: High-volume OEM orders where price competitiveness is the primary driver and flexibility in brand customisation is needed.
Caveat for buyers: Tianneng's primary business is electric vehicle batteries, not stationary UPS/telecom AGM. For specialised high-reliability stationary applications, a dedicated stationary battery manufacturer may serve technical requirements better.
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3. Chaowei Power (超威电源集团) — Changxing, Zhejiang
Chaowei (Chilwee) is Tianneng's primary domestic competitor, also listed on HKEx (HK: 0951). Like Tianneng, their primary volume is in electric vehicle lead-acid batteries, but their stationary AGM line has been growing since 2015.
AGM product strengths: - 12V AGM range 7Ah–200Ah with CE and IEC compliance - Competitive pricing driven by manufacturing scale - Active OEM programme for private-label distributors
Best suited for: Price-sensitive bulk orders, electric vehicle auxiliary batteries, retail-channel products.
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4. Ritar International Group (瑞达电源) — Shenzhen, Guangdong
Ritar is one of the most internationally recognised Chinese AGM brands, with a dedicated focus on stationary VRLA batteries. Founded in 2002, they have built a strong reputation with system integrators in Europe, North America, and Australia.
AGM product strengths: - RT series 12V AGM: 4Ah–250Ah, 5-year design life (standard) and 10-year design life (DG series) - Lead-carbon AGM for solar cycling applications — extends cycle life 2–3x vs standard AGM - UPS high-rate AGM (HR series) optimised for 15-minute runtime discharge profiles - IEC 60896-21/22, CE, UL certification
Best suited for: UPS OEM, solar energy storage, network rack batteries, applications where brand reputation with end-customers matters.
Technical note: Ritar's HR (High Rate) series is engineered specifically for data centre UPS — lower internal resistance, higher power density, optimised for 10–15 minute discharge rather than long-duration standby.
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5. Leoch International Technology (理士国际) — Guangzhou, Guangdong
Leoch is a vertically integrated battery group with one of the broadest product ranges among Chinese manufacturers — from 1Ah alarm batteries to 3,000Ah utility cells. Listed on HKEx (HK: 1519), they operate 16 manufacturing bases globally.
AGM product strengths: - LP series 12V AGM (2Ah–250Ah) for UPS, security, and solar - DJM deep-cycle AGM for solar applications (600+ cycles at 50% DOD) - 2V stationary cells (100Ah–3,000Ah) for large-format UPS and telecom - OPzV tubular gel for extreme-cycling applications - UL recognition on select models for the North American market
Best suited for: Buyers needing a single-vendor solution across multiple battery types — UPS, solar, mobility, and industrial in one supplier relationship.
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6. CSB Battery Co. — Yangzhou, Jiangsu
CSB is a Taiwan-founded, globally operating battery company with manufacturing based in mainland China. They have built a strong reputation in premium UPS battery segments through partnerships with major UPS OEMs (Eaton, APC/Schneider, and others).
AGM product strengths: - GPL (General Purpose Long Life) series — 10-year design life at 20°C float, widely used in critical infrastructure UPS - HR (High Rate) series — engineered for 15-minute UPS discharge, used in data centres - EVH (Enhanced Valve) series — high-temperature AGM for 30–40°C environments - UL 1989 recognition (North America critical power)
Best suited for: Critical-infrastructure UPS replacement batteries, buyers who need documented UL/ULC certification for North American projects, applications requiring 10–12 year design life.
Note: CSB is positioned at a price premium versus Chinese-origin brands. For buyers where certification pedigree and design-life documentation are contractually required (hospitals, data centres), the premium is justifiable.
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7. Sacred Sun (圣阳电源) — Zibo, Shandong
Sacred Sun is one of China's original stationary battery specialists, founded in 1991 with a continuous focus on telecom and industrial standby applications. They supply all three major Chinese telecom carriers and have a growing international footprint.
AGM product strengths: - FST series front-terminal AGM for telecom cabinet integration - SP/SPH high-performance stationary AGM — 2V cells up to 3,000Ah - Solar cycle-service AGM (SPC series) rated for 1,200+ cycles at 50% DOD - IEC 60896-21 type-tested; specific models hold China Telecom enterprise standards approval
Best suited for: Telecom operators building or expanding BTS networks, industrial UPS for manufacturing facilities, buyers who need a well-established supplier with domestic telecom carrier references.
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8. Vision Battery (威神电源) — Shenzhen, Guangdong
Vision has been manufacturing VRLA batteries since 1994 with a consistent focus on export markets. They were among the first Chinese AGM manufacturers to obtain UL recognition and have built distributor networks across North America, Europe, and Asia-Pacific.
AGM product strengths: - 6FM series 12V AGM (3.2Ah–200Ah) — broad general-purpose range - 6FMD deep-cycle AGM for solar and trolling motor applications - EV-grade AGM for electric scooters and golf carts - ISO 9001, CE, UL on select models
Best suited for: Mid-market distributors supplying security systems, UPS replacement batteries, solar off-grid, and marine applications. Vision offers good breadth without top-tier premium pricing.
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9. Naradex Battery — Foshan, Guangdong
Naradex (operating under CSPower / Best Battery Tech) has manufactured AGM batteries in Foshan since 2006. With 400+ employees and a 20,000 m² production facility, the company occupies a focused niche: technically specified AGM and GEL batteries for demanding UPS, telecom, and solar applications with full OEM/ODM support.
AGM product strengths: - 12V AGM batteries from 7Ah to 250Ah — deep-cycle and standby variants - 2V stationary AGM cells from 150Ah to 3,000Ah for large UPS/telecom strings - PAM+ (Positive Active Material Plus) formulation — independently tested for 20–30% higher cycle endurance vs standard AGM - OPzV tubular gel for solar applications requiring 15+ year service - IEC 60896-21/22, IEC 61427, CE, ISO 9001/14001/45001, RoHS, MSDS - Full OEM: custom branding, custom Ah ratings, custom terminal configurations
Why buyers choose Naradex for OEM: Unlike the mega-manufacturers (Tianneng, Leoch), Naradex operates at a scale where mid-size OEM orders (500–5,000 units) receive dedicated engineering attention — custom capacity, terminal layout, and electrolyte adjustment for specific operating temperatures. Minimum order quantities are lower and lead times more predictable for new product development.
Best suited for: Distributors building a private-label AGM line, system integrators needing technically tailored batteries for UPS or solar projects, buyers who want IEC-certified AGM at competitive pricing with genuine OEM flexibility.
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10. Shoto Group (沃特玛/双登关联) — Taizhou, Jiangsu
Shoto (formerly marketed as Shuangdeng's international brand, now operating as an independent entity under CITIC Guoan) is a specialised stationary battery manufacturer with deep roots in telecom infrastructure supply.
AGM product strengths: - Telecom-grade stationary AGM (2V and 12V) for BTS and core network - OPzV long-life gel for extreme environments - Lithium iron phosphate as a complementary offering for operators transitioning technologies - Comprehensive certifications for telecom operator qualification programmes
Best suited for: Telecom infrastructure buyers who need batteries that meet carrier-grade qualification standards; projects in regions where Shoto has established distributor and after-sales support.
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AGM Battery Application Matrix: Which Manufacturer Fits Your Use Case
Key Certifications to Verify When Sourcing AGM Batteries from China
Before placing a production order, request the following certification documents and verify them independently:
IEC 60896-21/22 — The primary international standard for stationary VRLA batteries. Part 21 covers sealed valve-regulated batteries; Part 22 covers type tests. A factory claiming "IEC compliance" without a third-party type test certificate (Intertek, SGS, TÜV, or Bureau Veritas) should raise flags.
IEC 61427 — Covers secondary cells and batteries for solar photovoltaic energy systems. Required for serious solar AGM suppliers.
CE Marking — Mandatory for any battery shipped to EU markets. Verify the Declaration of Conformity and the test reports behind it.
UL 1989 / ULC S527 — Required for standby batteries used in North American critical infrastructure. CSB and Leoch are among the few Chinese manufacturers with genuine UL recognition on their AGM lines.
ISO 9001:2015 — Minimum quality management baseline. Prefer factories that also hold ISO 14001 (environmental) and ISO 45001 (occupational health) — these indicate a more mature management system.
For a deeper dive into AGM battery testing and what cycle life specifications really mean, read our AGM battery cycle life testing guide.
How to Source AGM Batteries from China: 5 Practical Steps
Step 1: Define Your Technical Specification
Before approaching any manufacturer, document your requirements: - Nominal voltage and Ah capacity - Application (UPS standby, solar cycling, telecom float) - Design life requirement (5, 10, or 12 years at float) - Operating temperature range - Terminal type (F1/F2 Faston, M5/M6/M8 bolt, front terminal) - Certification requirements (CE, UL, IEC) - Annual volume and MOQ tolerance
Step 2: Request Technical Data Sheets and Certificates
Ask for the IEC 60896-21 type test report (not just the CE declaration) and the ISO certificate with a current validity date. Serious manufacturers respond in 24 hours with complete documentation. Be cautious of factories that send generic brochures instead of specific test reports.
Step 3: Order Samples and Test Before Committing
Test samples against your actual application. For UPS batteries, run a discharge at the rated C-rate and measure actual capacity. For solar cycling, run 50 cycles at your target DOD and measure capacity retention. One week of sample testing eliminates months of field problems.
Step 4: Conduct or Commission a Factory Audit
For orders above $50,000 or relationships you plan to build over multiple years, a factory audit is worth the investment. Key things to check: lead smelting/recycling licence (environmental compliance), paste mixing quality control, formation cycling documentation, and incoming raw material inspection records.
Step 5: Establish Clear OEM Terms
If ordering private-label batteries, define in the contract: minimum order per SKU, lead time, tooling ownership (for custom cases), marking requirements (brand logo, capacity label, batch code), and quality inspection right before shipment.
For a detailed guide on the OEM process with Chinese battery manufacturers, see our unbranded battery OEM guide.
Frequently Asked Questions: AGM Battery Sourcing from China
See the FAQ section below for answers to the most common questions from distributors and OEM buyers.