I have to agree with Zeeb. There are many threads, on RCU, discussing the merits of LiFe. They have many advantages, but it is well known that it is difficult to determine when the voltage will drop below acceptable levels when using just an ESV.
http://media.hyperion.hk/dn/sentry/m...ryMan12-EN.pdf
There is nothing in this manual that leads me to believe that this Hyperion ESV has some Magic making it easier, than any other ESV, to predict when a LiFe will run out of power. LiPos lose power at a predictable rate and keeping an eye on the voltage drop lets you know when it is time to recharge. This is not the case with LiFe.