[m4a1sniper]

Hey guys i am sorry for asking this but i could not find an answer in the battery faq and the charge rate tables would not open for me.I just got a
8.4v 1700mAh Ni-CD battery, universal smart charger and a tokyo marui discharger.i am charging my battery right now on the 1.8v setting on my charger i was wondering what i do once it is charged can i use it or should i discharge it once.And how do i use these dischargers the instuctions are in japanese.