No need to discharge anything if youre in a hurry. Best (safest) charge rate is c/10 but you can charge at c/5 or c if you want. Dont forget about your wall wart, can charge 2 batteries with a good slow charge at the same time. I always use wall warts and charge at c/10 (.3A) with computer charger at home and top off at c (2.3A) when in a hurry or at the field. You can cycle/discharge when youre not in a hurry.