diff --git a/Battery.md b/Battery.md
index 5e11764..4944980 100644
--- a/Battery.md
+++ b/Battery.md
@@ -30,6 +30,7 @@ If the board is [beeping](https://github.com/EmanuelFeru/hoverboard-firmware-hac
 * With a battery of low quality/bad health, pulling a lot of current will result in a big battery voltage drop and trigger battery low alerts. You can use a better battery or several similar batteries in parallel
 * Reducing the [battery low levels](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Battery/_edit#battery-level-low-alerts) can help but going too low can be risky for your battery
 * You can limit the [current](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Setup-current-and-speed-limits#current-limit) being drawn to reduce the voltage drop but you will also reduce the power
+* [Debug Serial](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Debug-Serial) can be used to monitor battery voltage
 
 If the board turns off without the melody, the BMS is shutting the power off
 * You might be drawing too much current. You can limit the [current](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Setup-current-and-speed-limits#current-limit) being drawn not to trigger the BMS over-discharge protection but you will reduce the power