Most of the info I've found regarding sunhans on phantoms pertain to Phantom 2's or Standards, and are using older amps. My questions pertain to the newer amps (shown below) on Phantom 3 Professionals. I'm not into breaking distance records. I just live in a wifi congested area where the homes are close together. There is a large river surrounded by lots of trees approx. 1000ft away. I can make there with only the DBS ITelite antenna but depending on the day and time of day, my controller will drop a bar or two of RC and Video signal. 1) The instructions for sunhans amps say the blue light should be blinking. Mine stayed on solid (everything connected: battery to amps / radio to amp / amp to DBS antenna). 2) I purchased amps with blue battery ( I think it's from Sunhans ), Model DC12480 (shown above). I connected to charger with switch in "ON" position (suggested by others), but the green light on charger stays solid green the whole time, even after leaving on for a few hours. Was the battery fully charged already? Is there any indicator to tell me when it's time to recharge the battery (other than it not powering on)? I measured the battery voltage and it was 12.5 Vdc. Thanks in advance!