Check your battery set is in good nic and not due to be replaced by a newer model range, as your batteries will be extremely hard to get hold of in a very short space of time once the new model is out.
But I'm guessing from the slide on body shape that its the newer set they all swapped over to from the slap in style ones of old. Batteries and charger are absolutely key to the set obviously, as you've probably heard the master say on here on other threads.
Lithium ion need constant use to keep the batteries tip top, each time I go out to the garage I stick one in charge, keep them rotated and fully charged to keep the electrons(?) moving or they'll drop of the charge scale and the charger won't switch on complaining the batteries are caput.
If its only occasional use go for ni cad as they hold the charge better over long periods I believe, but check that info first I have no experience with them.
You'll also find the body only is cheaper in the states. Less than half price ime. Costco wanted little under £190 for the body only. I paid £90 incl duty from the states. And it was better spec, with a built in torch attachment none of the uk ones had. (Obviously the charger needs to be uk spec)
My one is a tiddler. It won't do wheel nuts at 110nm. It probably does 90 to 100nm absolute max fully charged, and about 70nm average over a complete discharged battery. But it's VERY handy in small species. Loosen off first. Short reach, narrow body., fits on wishbone bolts, under sills for donut bushes where the big powerful ones are too long and bloody heavy for under car work where you have to hold it above your head.
In all honesty I was going to go for a snap on one for wheel nuts. But with use of my tiddler after a while I don't think its worth the cost. You have to get the torque wrench out to do the bolts up anyway, so I use that to brake the nuts loose, then wiz them out with the orgazma gizmo. Wiz back in on refitting, torque up, jobbed. It saves so much agro, its light and useful more jobs than a big one would be.
The only thing I don't like about mine is the trigger. Its a switch. It's either flat out or off. It really needs the control of a progressive trigger tbh, the risk of cross threading would be massively reduced. Not that I've had a problem with that so far.
Brilliant little things they are. ...try not to get it wet though.