I have been trying to figure out if Gel SLA batteries are an evolution of AGM or if it's it's own thing, but I can't really find a straight answer. Do Gel SLA batteries still use liquid acid of there is a silicon based gel electrolyte? I would assume yes given that it's still an 'SLA' type battery. If yes, then do Gel SLA batteries also have Absorbent Glass Mats? It would seem to me that combining the gel electrolyte with the acid saturated glass mats would make for the best performance for this battery chemistry, but I am a little confused about the electrolyte situation as I thought the acid part of SLA batteries functioned the same as liquid solvent electrolytes we find in lithium chemistry batteries nowadays. Am I correct in assuming that all Gel SLA batteries are AGM but not all AGM are Gel batteries. I'd love for someone to fill me in. I love the technical tech about batteries but I am just a casual nerd about it and barely know Jack about the real super technical aspects of batteries and electrical systems.