When using AA size Ni-MH batteries in Speedlights it is always advisable to discharge them before recharging. My practice is to connect the four batteries to a 6v bulb in series until the batteries are fully discharged.
( 1 ) After an overnight's discharging procedure I have noticed 3 cells get fully discharged but one has little amount of charge left in it. Has anybody experienced this? How to overcome this?
( 2 ) Are there any 'Discharging units' available in the market?
Thanks if someone can answer these questions.