Is my battery pack for my sb800 working?
One thing I've noticed with mine (though this is with the SB900 series I'd imagine it's the same) the batteries in camera are really there just to complete the circuit. So right now, in one of my flashes if I turn it on without the external pack, I immediately get a note that batteries are low and it's time to change. When I hook up the pack, it works like a champ.
'Nice pen, bet you write good stories with it.'