Sat on hold for 20 minutes waiting for Xantrex customer support. Gave up when daughter had to go to school
Oh well at least I tried to add yet another battery
My Xantrex TrueCharge 20+ never shows more than 5% of charging
capacity being used. I've run the batteries (2 Group 24 flooded cells.) down to 12.25 volts which is below the level that should kick in the "bulk charge" mode.
Also if I simply run the stereo (modest car stereo no fancy amps, etc...) the Xantrex doesn't maintain the battery
voltage level (indicated voltage drops at about same rate with the TrueCharge unit circuit breaker in either state (on/off).
I would expect the the charger
to go to a higher rate of output based on rate of drain or lower detected voltage level.