A quick glance at the performance chart tells you which Turbo is right for you. At 23 ounces (650g) The “Z” is about 1/3 smaller and lighter than the Turbo. It delivers substantial capacity and recycles almost as fast as the Turbo Battery. The Turbo Z “fuel gauge” is part of a new design that displays charging progress as the battery level increases. The Turbo Battery has the fastest recycling and delivers the most shots per charge of any Quantum Battery.
If you’re a Qflash T/T2 or a handle-mount flash shooter, you may prefer the regular Turbo.
If you use shoe-mounts you may prefer the newer Turbo Z.
$ to $