Originally posted by awaldram I have FLu constantly in slot2 64gb in slot1 shoot RAW slot1 mid jpeg slot 2 with my usage patterns I get around 1000+ shots per charge.
Just having the Flu in the slot and actually using its wireless features are two very different things in terms of battery use. I often keep the Flucard in Slot 2 as well, but turned off. Nevertheless, 1,000 is more actuations than I have ever gotten with or without the card, and my results are close to the Pentax estimates. You must be doing a very good job of battery conservation.
I like the Flucard feature, but when its wireless features (especially control) are used, it gets warm--a sure sign of serious power use from the card, itself. In addition, the camera must not be set to turn itself off as quickly so that the wireless transmission can be completed, and for control the sensor is on for live view features for extended periods. All of these suck power. If I am actually using the remote feature, I almost always use the battery grip.
It is interesting that, regardless of the battery state in my grip, my power meter icon drops as soon as I turn the card on and connect, but the full power indication may come back as soon as the card is off and the camera is restarted. It is apparently pulling the voltage down enough to make the camera think the batteries are low.