Quote by Ally
Finally ready to buy another 100 watt panel.
Going to go for the MPPT controller quoted above (I see it has went up in price), I don;t really need the engine battery charged as i use the van weekly.
MPPT controlled says it can support up to 300watt, so I'd be safe to buy a 150watt panel, bringing me to 250watt's?
This One
Just checked the spec on the PCM3012.
The maximum input voltage is specified as Voc 50volts. This is OK for two 12 volt solar panels in series. The max Voc of each of your panels will be 21 or 22 volts
The MPPT control range has a max of 37volts, this is the max voltage in operation that the controller can accept. This is right at the top end of what MIGHT get produced from your two panels in series when they are under load.
The controller should be just OK but don't have your solar panels connected to the controller without the batteries connected.