I'm not a lipo expert, so I thought I would ask a few questions before I try something and end up ruining some of my equipment.

Basically I want to run to identical lipo packs in parallel. Both are 1800mah 7.4v 35C mini lipo packs.
Running in parallel will still give me 7.4V, but give me 3600 mah correct?
Is there any dangers to running lipos in parallel? Should I check the voltage after they are charged to make sure they are equal before plugging them in together, or will they equal themselves out? Do they discharge equally together?

I know I'm going to get asked the question, "Why don't you just use 1 3400 normal sized lipo?"
I have a few reasons as to why.
1. I'm running this in a Tamiya F104, space is very limited already. And yes I actually GAIN space using two smaller lipos as opposed to one larger lipo. It allows me to play around with weight distribution as well.
2. I only own 1 full size lipo that actually fits the chassis anyways, so I would have to purchase an additional one for racing. Whereas I already own 4 of these mini lipos.
3. Just one of the 1800 mah mini lipos is enough runtime for qualifiers, and it SHOULD be enough for the main, but if it's not I'd like to have a backup plan.

Also the weight of the 2 mini lipos equals exactly the same weight as the 1 full size lipo.

Thanks