Motorguide Xi5 battery indicator

[parmo]

I finally upgraded my minn kota yesterday to the new mortorguide Xi5.

I noticed that either or the two deep cycle batteries i was using for my minn kota would show up as red on the battery indicator even though fully charged.
I did know these batteries were on the way out from getting them tested a while back.
Then i tried my reasonably new crank battery, Same red indicator light.
Then i hooked up my charger on power supply mode straight to the leccy and still the red light.

Just wondering if anyone else has had this problem and if my unit is faulty.