Mppt gets hot

Hello. The mppt gets quite hot. Is it common to use a ventilator? Or is there nothing to worry about? Thanks in advance

Yes, its normal for the MPPT to get hot, and generally nothing to worry about. A cooler unit will theoretically last longer, but they are designed to have a long life even when run hot.

There are a couple of mitigation systems already built in;

  • There is a huge heat sink (basically the whole bottom of the unit), so if you mount it the right way, convection of air will help move that heat away from the heat sink
  • The mppt will derate (temporarily lower the Max charge current) when it gets too hot

There are a couple of options you have too;

  • Some users have added always-on fans or temperature controlled fans to move more air past the heat sink which can have a significant effect on the running temperature.
  • You can “turn down” the max current which in turn keeps the unit cooler. In VictronConnect, go to the gear wheel (Settings), Battery, look for “Max charge current”. This will default to the units design max (e.g. 20A for a 100/20) but can be set as low as you want.

Thank you for your response! Very helpfull :slight_smile: