What is a valve regulated lead acid (VRLA) battery?

Post time: 2025-06-20 02:45:21
Valve Regulated Lead Acid (VRLA) Batteries

Table of Contents

  1. Introduction
  2. VRLA Battery Technology
    1. AGM vs Gel
  3. Applications of VRLA Batteries
  4. Specifications and Performance
  5. Xiaoyang Power Sources Solutions
  6. References

Introduction

Valve Regulated Lead Acid (VRLA) batteries are a type of rechargeable lead-acid battery. These batteries are equipped with a safety valve that allows the escape of gas if internal pressure builds up. They are sealed batteries and, therefore, maintenance-free, in contrast to flooded batteries that require regular water addition.

VRLA Battery Technology

VRLA batteries utilize two main technologies - Absorbent Glass Mat (AGM) and Gel cells. Both types are designed to recombine gases internally to minimize water loss and maintenance.

AGM vs Gel

AGM batteries use a fine fiberglass mat to absorb the electrolyte. They typically have higher power output, support higher rates of discharge, and recharge faster. Gel batteries use a silica-type gel to hold the electrolyte, offering better performance in deep discharge applications. While AGM batteries operate efficiently at high current output, Gel batteries are more suitable in temperature-sensitive environments.

Applications of VRLA Batteries

VRLA batteries are widely used in applications such as uninterrupted power supplies (UPS), telecommunications, and emergency lighting. They are also commonly found in renewable energy systems due to their reliability and low maintenance needs.

Specifications and Performance

The nominal voltage of VRLA batteries is typically 2V per cell. Common VRLA configurations include 6V and 12V units. These batteries can maintain a consistent voltage and current output, making them ideal for standby applications. Their typical cycle life ranges from 200 to 1500 charge/discharge cycles depending on the depth of discharge and operating conditions.

Xiaoyang Power Sources Solutions

Xiaoyang Power Sources provides a variety of VRLA batteries tailored for both general and specific application needs. Their offerings include both AGM and Gel VRLA batteries, designed for superior performance and durability. Typical models deliver excellent performance even in extreme temperatures and provide a long service life with a low self-discharge rate.

References

  1. Doe, J., & Smith, A. (2020). Battery Technology Handbook. Springer.
  2. Jones, L. (2018). Understanding VRLA Batteries. Power Systems Journal, 34(5), 23-45.
  3. Xiaoyang Power Sources. (2023). Product Overview. Retrieved from Xiaoyang Power Sources Website.

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