1 files changed, 2 insertions, 0 deletions

diff --git a/library/power.cpp b/library/power.cpp
index 990ff62..12b52ed 100644
--- a/library/power.cpp
+++ b/library/power.cpp
@@ -81,48 +81,50 @@ bool PowerStatusManager::getProcApmStatus( int &ac, int &bs, int &bf, int &pc, i
         switch ( u ) {
             case 'm': sec *= 60;
             case 's': break; // ok
             default: sec = -1; // unknown
         }
 
         // extract data
         switch ( bs ) {
             case 0x00:
                 ps->bs = PowerStatus::High;
                 break;
             case 0x01:
                 ps->bs = PowerStatus::Low;
                 break;
             case 0x7f:
                 ps->bs = PowerStatus::VeryLow;
                 break;
             case 0x02:
                 ps->bs = PowerStatus::Critical;
                 break;
             case 0x03:
                 ps->bs = PowerStatus::Charging;
                 break;
             case 0x04:
+            case 0xff: // 0xff is Unknown but we map to NotPresent
+            default:
                 ps->bs = PowerStatus::NotPresent;
                 break;
         }
 
         switch ( ac ) {
             case 0x00:
                 ps->ac = PowerStatus::Offline;
                 break;
             case 0x01:
                 ps->ac = PowerStatus::Online;
                 break;
             case 0x02:
                 ps->ac = PowerStatus::Backup;
                 break;
         }
 
         if ( pc > 100 )
             pc = -1;
 
         ps->percentRemain = pc;
         ps->secsRemain = sec;
 
         ok = true;
     }