Has anyone powered an Arduino Fio with a high capacity battery like this Lithium-Ion Polymer 3.7V 35Ah battery : http://www.tenergy.com/Tenergy-Lithium-Ion-Polymer-3-7V-35Ah-95212223-Rechargeable-Battery
I have a Fio project currently running on a 6Ah battery and I get about 5 days out of it. It's just enough that I can recharge it over the weekend (it's at the office) but the battery is starting to show some signs of aging. So while I start looking for a replacement, I was thinking maybe I could find a larger battery and hopefully recharge it maybe once a month instead of once a week. On paper it looks like it should work but I am wondering if their might be something I am missing (like maybe the Fio can't charge a battery over a certain size or something like that).
Any feedback or advice would be greatly appreciated.