Somewhere between 30 and 36 hours of continuous powered-on usage depending on battery model. In practice this can often last a whole shoot week.
Here's how we work it out:
The RT Motion Controller draws somewhere between 0.04 and 0.05 amperes (50 milliamperes) when connected to the RT Motion Receiver wirelessly over 2.4GHz and transmitting real time control data.
Our recommended battery (Canon LP-E6 1800mAh Li-Ion rechargeable) ' is rated at 1800mAh (1.8 ampere hours)
If we divide the battery ampere hour rating by the current draw we get the following sum:
1.8Ah / 0.050A = 36 Hours
Voila! 36 HOURS