Hey Fizzie
They are great, i recently bought this one from Repco when it was on special with $100 off. It's claimed to start petrol engines up to 8lt and diesel engines up to 4lt.
Used it to start a neighbours 5lt V8 last week and it handled it no problem. You could light up half the neighbourhood with the onboard LED torch, it's a beauty. Also comes with two USB ports.
I have one of these in each car. They are absolutely fantastic.
Some mug left the lights on the tractor on and I used it to jumpstart it. Then on the way home a dunnydore had a flat at a servo and I used it to jumpstart that.
Forgot about it for a couple of weeks then used it to start the excavator as I took the battery out and forgot to take it back with me!!!! (goose I know...)
It still had enough oomph to start it.
Finally got round to charging it and putting it back in its place in the car...
Love it.
Now onto the OP - I am absolutely wrapt - I got a weber Q for the caravan for my birthday a few days before fathers day and then got all the bits to go with it for fathers day.
Why have I not had one before?
Loving that too. Thanks ferals, you really do love your old man