Hi, I don´t know if this is a great place to ask this, but thought I would give it a try.

I am on my third nexus 7 and still have the batteries from the first two.

[Quick warning...beware! the glass can break just by prying the case open! Be careful!]

Can anyone tell me exactly how I might go about adding one or two extra batteries to my nexus to increase capacity? As in, exactly how to wire it? I am not electrically savvy, but can follow instructions well. I can figure out how to attach the batteries externally once wired; am not in the least concerned about ugliness or thickness.

Thanks for any help! I travel by bike a lot and would love to beef it up for those days when I stop a while and can´t charge off my dynamo.