Hi there I am trying to recharge only 2 AAA batteries in the CHP41US charger. I remember that the order placed in the charger is critical ie in slots 1 and 3 or 2 and 4 or whatever. I can't find instructions I got when bought. Have tried all combinations I can but top blue lights just flash on when I turn on the power and then go blank, no matter what order. Would someone please confirm what slots to place in. Any comment on why the blue lights go out would also be much appreciated. Thanks