Batteries work great, Rage 3 is the best!
Use this gimbal with a Sony a72 and Canon 24-105. It has enough torque to work with the 105mm which is impressive. The batteries don't seem to last as long as I'd like. (Getting around 3 hours on a set with this setup.) The biggest disappointment is the software for tuning the gimbal. It won't work correctly on my Iphone SE. The factory tuning is not very smooth and needs some additional smoothing added via the app. Unfortunately I can't get the app to work! It crashes on my phone. Otherwise, I'd say it's a decent gimbal for the price.