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Professional VRLA Battery Manufacturer Since 1992

Professional VRLA Battery Manufacturer since 2005-CTB

OEM Custom Services
We are your reliable OEM manufacturer of lead-acid batteries and plates, capable of customizing production based on your technical specifications (capacity, voltage, size) and brand requirements, and providing one-stop export support. 

Our services cover the entire life cycle, from sample confirmation and scalable mass production to strict full-process quality inspection and reliable global logistics distribution. Additionally, we guarantee stable supply capacity and flexible minimum order quantities (MOQ) to efficiently meet your diverse order demands.
Recommended Products

CTB Valve Regulated Lead Acid Battery is a sealed maintenance‑free VRLA product designed for versatile long‑term use. It requires no water refilling, delivers zero leakage and acid mist, and supports both horizontal and vertical installation for broad compatibility. Key specifications cover nominal voltage, rated capacity, designed service life, cycle life, operating temperature range and relevant safety certifications, helping users choose suitable solutions for different projects. This battery fully meets international industrial safety standards, supports customized OEM/ODM services and stable mass production supply. VRLA battery is widely applied in backup power, telecom base stations, solar energy storage, UPS systems, medical devices, rail transit, security and emergency power systems.

Why choose us

Battery Factories In China And Vietnam
Chinese battery fand Vietnam factories produce more than one thousand of types of plates, and hundreds of models of sealed lead acid batteries.
We Produce Plates Ourselves
Self-making plates help the company to ensure the batteries a reliable performance and high quality.
ISO Certification
CTB, certified with ISO 9001, ISO 14001 and ISO45001, is strictly working on quality control of all plates and batteries.
International Standards
The technique and performance of all CTB batteries comply with the international standards, like IEC, JIS, BS and other standards.
Warranty Policy
12-36 months (depending on product type).
Technical Support
Online technical support; remote fault diagnosis and installation guidance; engineers on-site to resolve issues.
Training Services
Training on operational safety standards and maintenance skills.
Document Repository
Guides, product specifications, and other related documents for battery usage and maintenance.
About Crown Tech Battery
Crown Tech Battery Co., Ltd (CTB), under Crown Industry Co., Limited, is one of the largest battery factories in China. CTB now owns one battery factory in China and one battery factory in Vietnam.Chinese battery fand Vietnam factories produce more than one thousand of types of plates, and hundreds of models of sealed lead acid batteries. 

CTB has always been a leader in Lead Acid Battery Plate manufacturing and battery assembling technology. CTB produces more than 550 different models of batteries used for Industrial, Motorcycle, and Automotive, and other applications. The technique and performance of all CTB batteries comply with the international standards, like IEC, JIS, BS and other standards.
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