I see that
Battery Logic are now selling chargers similar to the BL-700, but which have higher charging currents.
The
BC-1000 looks virtually identical to the BL-700, but can charge at up to 1A with all four batteries, and if you're happy to only charge two, at up to 1.8A.
Now, I suspect these options are probably only a good idea when you're in a rush, and can't wait, but I've just ordered one of these, and some more batteries, since I keep on finding that one charger isn't adequate, when inevitably I find myself needing a mass of batteries charged up
now!
I do need to find one of my old cheap and cheerful chargers to give one battery, which was utterly discharged, enough omph that the BL-700 will "see" it, and allow me to use the Refresh system to see if I can get it back into use (the BL-700 won't charge a battery whose output voltage is below 0.9V, because it doesn't realise it's there!)