The following patch fixes this problem.  The reason is because we can no longer measure battery voltage when the system power is off.  Thus it was getting spoofed into thinking the battery was removed.

This means we can't properly maintain RTC across battery removal, but i think that's a minor issue.  

Should we check in for 7.4.0?

Index: power.c
===================================================================
--- power.c     (revision 6428)
+++ power.c     (working copy)
@@ -265,10 +265,11 @@
                        }
                        if (!have_ac) {
                                        power_mode = POWER_OFF_BATT;
+                                       mdelay(POWER_OFF_DELAY);
                        }
-                       if (!have_batt) {
-                                       power_mode = POWER_OFF_AC;
-                       }
+                       // if (!have_batt) {
+                       //              power_mode = POWER_OFF_AC;
+                       // }
                        if (rtc_alarm_is_ringing()) {
                                        power_mode = POWER_ON_AC_AND_BATT;
                                        pins_state_on();

 == Auto-comment from SVN commit #6435 to the player repo by ccrome ==
 == https://svn.slimdevices.com/player?view=revision&revision=6435 ==

Fixed #14172.

 == Auto-comment from SVN commit #7724 to the jive repo by ccrome ==
 == https://svn.slimdevices.com/jive?view=revision&revision=7724 ==

Fixed #14172.

Verified fixed in SP r7847