Hi, I was wondering if anyone try to charge that P4 battery with LiHV charger and had any luck too? I purchase a (two) Phantom 4 cable # 1755 by (Venom) to charge the P4 battery with my Hyperion EOS720i Duo-3 charger. I did manage to down load the new LiHV firmware to the charger, but when I try to use the charger the battery starts to blink (taking a charge), then battery power off after 15 20 seconds. I have all the right setting on the charger and I don't know what I'm doing wrong that the battery keeps turning off or maybe the DJI has something built in the board that only use there charger only!! Try to power ON the battery first and then the charger to see if it will take the charge, but again it power off. The cable Recommended Charge Setting LiHV 5.4Amps 15.2Volts (4S) and I have this showing on the charger, but the battery still shuts off after few seconds. Any help. Thanks Capt.Heli