My question for you is does your coach have the Parallax 5300. If it does then the converter is only a 2 stage which is not a very good design. It often overcharges the batteries and will shorten there life expectancy. I removed the converter from mine and installed the WFCO 9855 which is a 4 stage (good for flooded, gel and AGM) and also can be set-up to charge lithium-ion batteries.
What's the difference between an Absorbed Glass Matt (AGM) battery and a Sealed Lead Acid (SLA) battery?
SLA, VLRA, AGM, Is There A Difference?SLA (Sealed Lead Acid) and VRLA (Valve Regulated Lead Acid) are different acronyms for the same battery. This battery type has the following characteristics: Maintenance-free, leak-proof, position insensitive. Batteries of this kind have a safety vent to release gas in case of excessive internal pressure build up. AGM (Absorbed Glass Mat) refers to a specific type of SLA/VRLA where the electrolyte is absorbed into separators between the plates consisting of sponge like fine glass fiber mats. SLA batteries are divided up into specific subsets of batteries.AGM And Gel Cell Batteries Difference?Both types of batteries are sealed, valve regulated batteries allowing them to be used in any position. The difference lies in the way the electrolyte is immobilized. In case of AGM (absorbed glass mat), the newer of the two technologies, the electrolyte is absorbed by the glass fiber separator who acts like a sponge. In a gel-type battery the liquid electrolyte turns into a gel right after the battery is filled. Gel batteries use a different type of separators which are not absorbent. Because of the design, gel cell batteries don't offer the same power capacity as do the same physical size AGM battery. For example, an AGM battery that is 12V 100AH, whereas, for example, a gel cell battery in the same size case would only be rated at 84AH.However, the Gel Cell excels in slow discharge rates and slightly higher operating temperatures. The internal design is otherwise similar.