New BEC

Today I got a new BEC to power the Arduino. The former setup was a smaller BEC rated 6s, which burned down after 5 minutes. Than I installed a 9V battery. with the new beter BEC I do not have to check for the voltage of the 9V battery. as far as there is a 6s 24V LiPo connected, the Arduino has power. Here is the photo of the old and new BEC (old, small one is already junk):