ok..let me start by saying, This math, isn't that hard, but understanding all the different terms(for a newbie) is extremely difficult, as I am not into electrics at all! I am wondering what it would take(if possible) to run a sla to power my laptop (14.8V, 3200mAH) and my ua5 (500mAH) with the same sla in the field, and have several hours. Is this possible with the different voltages? I am not looking to spend lots of money either, thats why I have not purchased a laptop pack. They are just too expensive. I do not go to record that often, and only in local clubs when i do(some have power some dont). I was looking at rat shack, and saw they had some 12V 7000mAH sla's for less than $30. Would this work? Sorry to be such a newb.