diff --git a/bootstat/boot_reason_test.sh b/bootstat/boot_reason_test.sh
index 603d04f..86e8789 100755
--- a/bootstat/boot_reason_test.sh
+++ b/bootstat/boot_reason_test.sh
@@ -429,6 +429,8 @@
     *thermal* )                             var="shutdown,thermal" ;;
     *s3_wakeup* )                           var="warm,s3_wakeup" ;;
     *hw_reset* )                            var="hard,hw_reset" ;;
+    *usb* )                                 var="cold,charger" ;;
+    *rtc* )                                 var="cold,rtc" ;;
     *bootloader* )                          var="bootloader" ;;
     * )                                     var="reboot" ;;
   esac
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index 5ca3bd4..27570b9 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -289,6 +289,8 @@
     {"oem_sdi_err_fatal", 145},
     {"pmic_watchdog", 146},
     {"software_master", 147},
+    {"cold,charger", 148},
+    {"cold,rtc", 149},
 };
 
 // Converts a string value representing the reason the system booted to an
@@ -591,6 +593,8 @@
         {"shutdown,thermal", "thermal"},
         {"warm,s3_wakeup", "s3_wakeup"},
         {"hard,hw_reset", "hw_reset"},
+        {"cold,charger", "usb"},
+        {"cold,rtc", "rtc"},
         {"reboot,2sec", "2sec_reboot"},
         {"bootloader", ""},
     };