wm8650 Battery issue


Oct 26, 2012
HI i have a wm8650 with green power and red charge black audio jack,

my issue is my unit show my battery at 50% charge only and seem not to charge .
I have replaced battery still same, but when I plug in my ac adapter the unit light turns red and battery indicator on software show a full battery percentage dose not switch over to show battery charge only stay on battery if i remove the plug it shows battery only at 50% and discharging. If i plug my ac adapter into my other wm8650 it works fine . Is this a hardware problem? if so is it related with dc jack? or dose it switch voltage internally?
has any one experience this problem if so can you please help me out. I also did software upgrade and also installed uberiod 12 all shows same not showing my ac adapter charging battery