- Sat Jan 13, 2018 9:08 pm #148332
new guy here.. my 3 yo son now has 4 motorized vehicles and i think that means we are at the early stages of a serious hobby.. anyway i have read a little and decided its best to charge the batteries with a schumacher charger instead of the factory supplied wall adapters. i got the small 1.5A maintainer and when i hook it up i hear a sizzling sound from the batteries.. i tried two different batteries.. both are 6V and the charger works for 6 or 12 batteries. voltage i measure is about 7.4. quickly googling the subject it doesnt sound like the batteries should be making sounds if they are charging at an appropriate rate. can anyone confirm?