Hey Thanks for all your help! So I was able to measure the amps of my small solar panel - I found on panel it is rated at 350ma, which is of course under ideal conditions. It was half cloudy when I went out...so it would go from .080 or so up to 0.250A as clouds came & went.
I got a larger panel from my son for my b-day..I haven't hooked it up, but it is made for charging 12 volt batteries too, but it is rated to hit 1 full amp under ideal conditions. I'll hook both up together and should get close to that full amp between the both of them in the full sun.
I'm considering putting them on top of my shop, and setting them up with a small inverter & using a light sensor to control the outside shop light. It's fairly burly, but I think it is supposed to be efficient...the thought is that the battery(s) could charge during day, and the light that lights up a good portion of my yard would come on at sunset, off when it gets light again. In this way, I could take that outside /security light off the main power...self sufficient. I have not idea how much power that light would take though...it's just an idea. I have to do lots of experimenting - and see just how much my load my inverter takes to run, etc.
As for the golf cart batteries - I switched the charger to the other "set" this morning. The one that charged most of day & all night, is reading 12.4 or 12.6...(after sitting for an hour) don't totally remember...not near where I'd like to see them, but it is the first "pass" at resurrecting them. That set also had the one battery that showed only 0.34v for the 6v battery. After this other set gets, up and running, I might throw the charger back on the other set - or change the sets around and try and push some more juice into them.
Not sure if I should partially discharge them and recharge them, if that helps bring them back to life, or if it is a waste of time. I don't have a pulsator...but I'll do what I can to get some life out of these. It's been a good time to get back out and charge all my batteries....I have 3 others like for trolling motors, etc...all different sizes. Not sure which batteries I will hook to my panels (I have a small charge controller, but if it proves to inefficient, I might take it out - as long as I am drawing current out of my batteries every day).
Quick question - is there a way I can tell how much electricity is being used to run my inverter? Do I check voltage drop when turned on or what? It's a Husky 750W inverter, with a cooling fan that always runs when on...I think it's probably not very efficient...ideally I'd like a small circuit that would draw minimum mA, and then when conditions met, it would turn the inverter on - and anything hooked up to it.