would putting a lead acid battery in a backpack damage it?
im trying to find a relatively inexpensive way to run my laptop off of something that will fit in my backpack and will be something that i can carry. so far i found out that i need a deep cycle or marine battery for my inverter, and an enclosure to make sure i dont get sulfuric acid everywhere, but all of the research ive found were about home backup systems which are stationary. would putting a lead acid battery in a backpack and carrying it around damage it or make it leak? i also found a lot of lithium ion batteries on amazon around 700 to 1600 mah for $.50 - $1... the sellers that sell them for that much have good ratings, is there something wrong with these, or did i hit a goldmine? example: http://www.amazon.com/Olympus-LI-30B-Rechargeable-Battery-Digital/dp/B00062WV6I/ref=sr_1_20?ie=UTF8&s=electronics&qid=1273381311&sr=1-20 if lead acid doesn't work (or the lithium ion), would 10 nimh d batteries work?