diff --git a/variants/heltec_t114/variant.h b/variants/heltec_t114/variant.h
index bfb4484d..73e4209b 100644
--- a/variants/heltec_t114/variant.h
+++ b/variants/heltec_t114/variant.h
@@ -32,7 +32,7 @@
 
 // Power management boot protection threshold (millivolts)
 // Set to 0 to disable boot protection
-#define PWRMGT_VOLTAGE_BOOTLOCK 3300   // Won't boot below this voltage (mV)
+#define PWRMGT_VOLTAGE_BOOTLOCK 0   // Won't boot below this voltage (mV)
 // LPCOMP wake configuration (voltage recovery from SYSTEMOFF)
 // AIN2 = P0.04 = BATTERY_PIN / PIN_VBAT_READ
 #define PWRMGT_LPCOMP_AIN 2
diff --git a/variants/rak4631/variant.h b/variants/rak4631/variant.h
index 142d93e9..990b0e28 100644
--- a/variants/rak4631/variant.h
+++ b/variants/rak4631/variant.h
@@ -106,7 +106,7 @@ extern "C"
 
 // Power management boot protection threshold (millivolts)
 // Set to 0 to disable boot protection
-#define PWRMGT_VOLTAGE_BOOTLOCK 3300   // Won't boot below this voltage (mV)
+#define PWRMGT_VOLTAGE_BOOTLOCK 0   // Won't boot below this voltage (mV)
 // LPCOMP wake configuration (voltage recovery from SYSTEMOFF)
 // AIN3 = P0.05 = PIN_A0 / PIN_VBAT_READ
 #define PWRMGT_LPCOMP_AIN 3
diff --git a/variants/xiao_nrf52/variant.h b/variants/xiao_nrf52/variant.h
index 25619b9e..65f7dabd 100644
--- a/variants/xiao_nrf52/variant.h
+++ b/variants/xiao_nrf52/variant.h
@@ -77,7 +77,7 @@ static const uint8_t D10 = 10;
 
 // Power management boot protection threshold (millivolts)
 // Set to 0 to disable boot protection
-#define PWRMGT_VOLTAGE_BOOTLOCK    3300   // Won't boot below this voltage
+#define PWRMGT_VOLTAGE_BOOTLOCK    0   // Won't boot below this voltage
 
 // LPCOMP wake configuration (voltage recovery from SYSTEMOFF)
 #define PWRMGT_LPCOMP_AIN           7     // AIN7 = P0.31 = PIN_VBAT