Victron BlueSolar MPPT 100/30

In a nutshell

Medium-sized MPPT solar charge controller, 100 V and 30 A, for 12 or 24 V batteries. It uses up to 880 W of panels at 24 V. Ideal for a shed, a vehicle, a boat or a small house.

What the two numbers of an MPPT charge controller mean

• The volts (V) are the maximum that the panels connected in series can add up to. On cool mornings the voltage rises a little, so you must leave some margin.
• The amps (A) are the maximum current the controller delivers to the battery. Multiplied by the battery voltage, this current gives the panel power it can use.
• The same controller delivers twice as much at 24 V as at 12 V.
• It works only with 12 or 24 V batteries; for a 48 V system you need a controller that accepts 48 V.
• If more panels are connected than it can handle, the controller does not use the excess (excess power does not damage it). But you must never exceed the input voltage: that does break it.

Keep in mind the Voc (open-circuit voltage) of your panels: for example, if a panel has 50.6 V, only one fits in series: two add up to 101 V, more than this equipment accepts.

About this model (100 V · 30 A)

• Usable power: 440 W at 12 V · 880 W at 24 V.
• Panels and battery with screw terminals. Efficiency 98 %.
• It does not include built-in Bluetooth: it is configured and monitored through its VE.Direct port, with the VictronConnect app via a VE.Direct Bluetooth Smart dongle or a VE.Direct to USB cable.