I think the previous respondant was confused - they are referring to the operating procedure for a lawnmower.
A wheelbarrow is simpler. Pick up the remote control, aim it towards the barrow and select the channel you wish.
I think that the correct way would be to lift the barrow by the two handles and push it forwards, then, when you get to where you want to move the contents to, you lift the barrow higher, with the handles and tip the contents onto the ground.
So far, no-one has mentioned anything about the batteries...!
The wheel barrow makes moving heavy stuff easier because the weight of the load is supported by the wheel - the only effort you have to put in is to move the barrow forwards. This entails overcoming the resistance between the ground and the wheel. Much easier than lifting the load yourself!