diff --git a/Battery.md b/Battery.md
index 9d9a9b7..4b8158c 100644
--- a/Battery.md
+++ b/Battery.md
@@ -27,6 +27,11 @@ You can adjust the levels to your needs in [config.h](https://github.com/Emanuel
 
 BAT_LVL1_ENABLE and BAT_DEAD_ENABLE are enabled by default, you can disable it by making it 0 in the config.h file.
 
+## Voltmeter
+You can connect a voltmeter between the middle pin of the TIP127 and ground, it will display battery level when the board is ON.<br>
+<img src="https://user-images.githubusercontent.com/20670049/236390510-272a5875-10d9-4081-bebe-214ae74c9205.png" width="700"><br>
+On some of the boards the wires for the bluetooth/speaker board can be used. (see [discussion](https://github.com/EFeru/hoverboard-firmware-hack-FOC/issues/390))
+
 ## Board Power consumption
 The mainboard consumes 80-90mA with motors disabled, and 160-170mA with motors enabled.