diff --git a/Firmware-Compatibility.md b/Firmware-Compatibility.md
index f274329..99a02db 100644
--- a/Firmware-Compatibility.md
+++ b/Firmware-Compatibility.md
@@ -5,6 +5,7 @@ For the reverse-engineered schematics of the mainboard, see [20150722_hoverboard
 
 Some boards have 6 wires on the hall sensors cable, with an additional white wire.<br>
 For those you can use the alternate mapping by changing parameter BOARD_VARIANT in [config.h](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/blob/master/Inc/config.h)<br>
+⚠️ The sideboard on the right hand side is powered with battery voltage on those boards⚠️
 
 It could be that your mainboard was designed differently, please check if the pin mapping is matching with the one in this [section](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Firmware-Compatibility#pin-mapping).