True 5 Volt Output
A nice touch with the DPS-9000 is that it comes with a little adapter for use with cameras calling for 5 volt power input. (The entire Fuji line of cameras, for instance.) The nice part about the DSP-9000's implementation of the 5v adapter is that it uses a true voltage regulator, rather than the voltage-dropping diode used by some other units. (I verified this with my own tests, across a range of 0 to about 1250 milliamps. The output voltage doesn't start to fall off until a power drain of around 1300 mA.) This means that the output voltage of the DPS-9000's 5v adapter will hold constant as the pack discharges. - This could translate into longer run times for 5v cameras, although I didn't test this.