Castle Creations has released their latest beast , the Monster X. The waterproof Monster X is capable of 2S LiPo up to 6S LiPo and this Bad Boy is capable of powering a RC monster that weighs up to 15 lbs. The new waterproof Monster X can also be configured to run sensored brushless motors with the purchase of an optional Sensor Harness from Castle Creations. (Of course). The improved heavy-duty adjustable Battery Eliminator Circuit (BEC) will provide plenty of power for power hungry servos.
For more info, Checkout Castle Creations Monster X.
This might be a nice option for the Axial Yeti XL. I may need to investigate further.
P.S. If this post is messed up, blame it on too many beverages celebrating Canada Day. Happy Canada Day to my fellow Canucks. We will see you on the track.