I am currently building a "battery box", for camping, and kayaking, etc. It has a few different features on it, such as a 150W inverter, a 48W spotlight, 12V accessory outlet, and strobe lights. The inverter and the spotlight seem to draw quite a bit of power, 7 Amps and 3 Amps respectively. (correct me if that doesn't sound right.)
This will all be powered by an ExpertPower 12v 8ah sealed lead acid battery, however I do not know if it can handle the load that I will put on it. I tried looking around, but most people were using this battery for some sort of home security system.
I found a datasheet on the bottom of their website that I think would tell me that (http://www.expertpower.us/exp1280), but I cannot interpret it because of its complexity. If someone could also show me the process of calculating this, that would be great, as I am very eager to learn.