A gel battery design is typically a modification of the standard lead-acid automotive or marine battery. A gelling agent is added to the electrolyte to reduce movement inside the battery case. Many gel batteries also use one-way valves in place of open vents, which help the normal internal gasses to recombine back into water in the battery, reducing gassing. Generally, gel batteries are less tolerant of high heat and are charged at lower power than traditional or AGM batteries. An OPTIMA battery is neither a gel battery nor a regular flooded battery. OPTIMA is a SPIRALCELL TECHNOLOGY AGM battery.
Or, just drive Charlie more!
One more thing, there are no Dumb questions on this site, Mr Milliman! We just look at the person whom asked the question and take it from there!
See ya soon, in beautiful Morrisville Pa.