diff --git a/badger_os/examples/badge.py b/badger_os/examples/badge.py
index aedf171..c376fd8 100644
--- a/badger_os/examples/badge.py
+++ b/badger_os/examples/badge.py
@@ -160,6 +160,10 @@ def draw_badge():
 draw_badge()
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if display.pressed(badger2040.BUTTON_A) or display.pressed(badger2040.BUTTON_B) or display.pressed(badger2040.BUTTON_C) or display.pressed(badger2040.BUTTON_UP) or display.pressed(badger2040.BUTTON_DOWN):
         badger_os.warning(display, "To change the text, connect Badger2040 to a PC, load up Thonny, and modify badge.txt")
         time.sleep(4)
diff --git a/badger_os/examples/ebook.py b/badger_os/examples/ebook.py
index 0ffb75d..cf4394a 100644
--- a/badger_os/examples/ebook.py
+++ b/badger_os/examples/ebook.py
@@ -189,6 +189,10 @@ def render_page():
     state["offsets"] = []
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     # Was the next page button pressed?
     if display.pressed(badger2040.BUTTON_DOWN):
         state["current_page"] += 1
diff --git a/badger_os/examples/fonts.py b/badger_os/examples/fonts.py
index d4329fd..f9d949d 100644
--- a/badger_os/examples/fonts.py
+++ b/badger_os/examples/fonts.py
@@ -109,6 +109,10 @@ def draw_fonts():
 # ------------------------------
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if display.pressed(badger2040.BUTTON_UP):
         state["selected_font"] -= 1
         if state["selected_font"] < 0:
diff --git a/badger_os/examples/help.py b/badger_os/examples/help.py
index df33f48..890926b 100644
--- a/badger_os/examples/help.py
+++ b/badger_os/examples/help.py
@@ -38,4 +38,5 @@
 # Call halt in a loop, on battery this switches off power.
 # On USB, the app will exit when A+C is pressed because the launcher picks that up.
 while True:
+    display.keepalive()
     display.halt()
diff --git a/badger_os/examples/image.py b/badger_os/examples/image.py
index 85fda9d..d721746 100644
--- a/badger_os/examples/image.py
+++ b/badger_os/examples/image.py
@@ -90,6 +90,10 @@ def show_image(n):
 
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if display.pressed(badger2040.BUTTON_UP):
         if state["current_image"] > 0:
             state["current_image"] -= 1
diff --git a/badger_os/examples/info.py b/badger_os/examples/info.py
index aa6f430..e592bfd 100644
--- a/badger_os/examples/info.py
+++ b/badger_os/examples/info.py
@@ -41,4 +41,5 @@
 # Call halt in a loop, on battery this switches off power.
 # On USB, the app will exit when A+C is pressed because the launcher picks that up.
 while True:
+    display.keepalive()
     display.halt()
diff --git a/badger_os/examples/list.py b/badger_os/examples/list.py
index 5b74125..bf9591c 100644
--- a/badger_os/examples/list.py
+++ b/badger_os/examples/list.py
@@ -213,6 +213,10 @@ def draw_checkbox(x, y, size, background, foreground, thickness, tick, padding):
 # ------------------------------
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if len(list_items) > 0:
         if display.pressed(badger2040.BUTTON_A):
             if state["current_item"] > 0:
diff --git a/badger_os/examples/net_info.py b/badger_os/examples/net_info.py
index 0e5ff01..96db200 100644
--- a/badger_os/examples/net_info.py
+++ b/badger_os/examples/net_info.py
@@ -45,4 +45,5 @@
 # Call halt in a loop, on battery this switches off power.
 # On USB, the app will exit when A+C is pressed because the launcher picks that up.
 while True:
+    display.keepalive()
     display.halt()
diff --git a/badger_os/examples/news.py b/badger_os/examples/news.py
index 87aa553..db08275 100644
--- a/badger_os/examples/news.py
+++ b/badger_os/examples/news.py
@@ -176,8 +176,7 @@ def draw_page():
 
 draw_page()
 
-while 1:
-
+while True:
     changed = False
 
     if button_down.value():
diff --git a/badger_os/examples/qrgen.py b/badger_os/examples/qrgen.py
index 8dea8a8..e0f3209 100644
--- a/badger_os/examples/qrgen.py
+++ b/badger_os/examples/qrgen.py
@@ -112,6 +112,10 @@ def draw_qr_file(n):
 changed = True
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if TOTAL_CODES > 1:
         if display.pressed(badger2040.BUTTON_UP):
             if state["current_qr"] > 0:
diff --git a/badger_os/examples/weather.py b/badger_os/examples/weather.py
index 1e4e97a..c5692fa 100644
--- a/badger_os/examples/weather.py
+++ b/badger_os/examples/weather.py
@@ -103,4 +103,5 @@ def draw_page():
 # Call halt in a loop, on battery this switches off power.
 # On USB, the app will exit when A+C is pressed because the launcher picks that up.
 while True:
+    display.keepalive()
     display.halt()
diff --git a/badger_os/launcher.py b/badger_os/launcher.py
index 645cfe6..b54f102 100644
--- a/badger_os/launcher.py
+++ b/badger_os/launcher.py
@@ -164,6 +164,10 @@ def button(pin):
 display.set_update_speed(badger2040.UPDATE_FAST)
 
 while True:
+    # Sometimes a button press or hold will keep the system
+    # powered *through* HALT, so latch the power back on.
+    display.keepalive()
+
     if display.pressed(badger2040.BUTTON_A):
         button(badger2040.BUTTON_A)
     if display.pressed(badger2040.BUTTON_B):
diff --git a/firmware/PIMORONI_BADGER2040/lib/badger2040.py b/firmware/PIMORONI_BADGER2040/lib/badger2040.py
index ee0a467..b01c971 100644
--- a/firmware/PIMORONI_BADGER2040/lib/badger2040.py
+++ b/firmware/PIMORONI_BADGER2040/lib/badger2040.py
@@ -51,6 +51,9 @@
 
 WAKEUP_MASK = 0
 
+enable = machine.Pin(ENABLE_3V3, machine.Pin.OUT)
+enable.on()
+
 
 def is_wireless():
     return False
@@ -88,9 +91,12 @@ def system_speed(speed):
         pass
 
 
+def turn_on():
+    enable.on()
+
+
 def turn_off():
     time.sleep(0.05)
-    enable = machine.Pin(ENABLE_3V3, machine.Pin.OUT)
     enable.off()
     # Simulate an idle state on USB power by blocking
     # until a button event
@@ -150,6 +156,9 @@ def thickness(self, thickness):
     def halt(self):
         turn_off()
 
+    def keepalive(self):
+        turn_on()
+
     def pressed(self, button):
         return BUTTONS[button].value() == (0 if button == BUTTON_USER else 1) or pressed_to_wake_get_once(button)
 
diff --git a/firmware/PIMORONI_BADGER2040W/lib/badger2040.py b/firmware/PIMORONI_BADGER2040W/lib/badger2040.py
index e077c1c..6cc1e40 100644
--- a/firmware/PIMORONI_BADGER2040W/lib/badger2040.py
+++ b/firmware/PIMORONI_BADGER2040W/lib/badger2040.py
@@ -57,6 +57,9 @@
 i2c.writeto_mem(0x51, 0x00, b'\x00')  # ensure rtc is running (this should be default?)
 rtc.enable_timer_interrupt(False)
 
+enable = machine.Pin(ENABLE_3V3, machine.Pin.OUT)
+enable.on()
+
 
 def is_wireless():
     return True
@@ -92,9 +95,12 @@ def system_speed(speed):
         pass
 
 
+def turn_on():
+    enable.on()
+
+
 def turn_off():
     time.sleep(0.05)
-    enable = machine.Pin(ENABLE_3V3, machine.Pin.OUT)
     enable.off()
     # Simulate an idle state on USB power by blocking
     # until an RTC alarm or button event
@@ -187,6 +193,9 @@ def thickness(self, thickness):
     def halt(self):
         turn_off()
 
+    def keepalive(self):
+        turn_on()
+
     def pressed(self, button):
         return BUTTONS[button].value() == 1 or pressed_to_wake_get_once(button)