can someone help me out with a nitecore new i4 intellicharger . i bought because my grasshopper still works it just doesnt charge . i took the grass hopper battery to the e cig vape shop were i bought the charger , the guy looked at the battery and said ya no prob i can charge it with this charger so i bought it . he said it was plug and play , so i figured i could just bring it home and throw the battery in and it will charge it at the right rate . but then i was reading the manual and it says you have to manually select for 3.7 volts which is what it says on the battery . but im having a hard time figuring out how to use the buttons on the charger to select the 3.7 . can i just put batteries in it without doing anything and will it charge propperly ?