I have a 4 bay turbo charger for my HVX... It's the one that gives readouts of the charge, etc.

I gotta say, I absolutely love it. It's one of the best single accessory purchases I have made.

It's especially nice when you are about to go on a shoot and you go "oh, crap... I forgot to charge my batteries..." Plug 'em in for a couple of hours and you are good to go.

It's ssaved my forgetful self more than once from not having enough batteries to make it through a long day out without the ability to charge batteries.

It is probably also one of the most rugged pieces of gear I own.