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
@@ -101,8 +101,10 @@ bool PowerStatusManager::getProcApmStatus( int &ac, int &bs, int &bf, int &pc, i
             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;
         }