Hi,
Hmm, that module you pointed out looks nice. I didn't think a radio like that would draw so much current. It really looks outside of coin cell capabilities.. In the prototype I want to build, the emitting antenna would be near the receiving one, just 1mm or 2 apart.. I'm wondering if that could be used to use less power someway, or with other product... The coin cell idea is really the only that appeals to me right now mainly because of space limitations and that's why I'm trying to find some way of doing it that way. I also found a SoC from texas instruments that is suitable for use with coin cells but it's for Bluetooth Low Energy / BT 4.0 and the hosts I want to connect to are Bluetooth 2.1 or less. This SoC isn't backward compatible so it isn't an option.. :S