Medium VRLA batteries are a type of rechargeable battery commonly used in a variety of applications, including backup power systems, uninterruptible power supplies (UPS), and renewable energy storage. These batteries feature a maintenance-free design as they are sealed and equipped with safety valves to prevent gas release. They come in a variety of capacities, usually ranging from around 20Ah to 200Ah or more. They are known for their reliability, high energy density, and ability to provide stable and consistent power. Due to their sealed construction, they are suitable for indoor use and can be installed in a variety of orientations without the risk of acid leakage.