Been resolved, i just connex the battery to power suply then I ride the volt slow, from 5v .its power supply noises. Turn off power suply then i charging the battery to external lipp charging imax b3 compare for 3s,
I have vtox dna 250, i can't charging but usb keep connect , sometimes wiranty service on display after remove usb cable, cant someone help me dna250.zip