Are there any reliable aftermarket batteries for the EX1r? The Sony ones are mighty expensive. Thanks!

The newest Switronix (not SWIT) 96wh battery seems really good by my standings. I also own the SWITs and the pigtail connector seems a little cheaper than the Switronix. The newest of both are compatible with the PMW-200.

One thing to note is the non-LED lamp based Anton Bauer Ultralights will cause both batteries to draw too much current, and the overcurrent protection inside the battery will trip. This abruptly shuts down both your Ultralight and your EX1R, so watch the amount of power draw that both your EX1R and your D-tap are taking.