VRLA is an acronym for 'Valve Regulated Lead Acid', over-against the well known wet cell motor car type lead acid battery which had little screw caps for topping them up with distilled water. These VRLA batteries are often referred to as 'Sealed Lead Acid' batteries (SLA); the word 'sealed' is strictly speaking not technically correct.
Batteries allow us to store our energy & backup system. They are often called the 'weakest link' in electricity systems, but battery problems nearly always are the result of bad equipment choices, installation errors, and lack of attention - the human factor! We have put together the most common mistakes & the solutions.