You can see the difference on the label of the regulator above that the 75 I 15 is change to 100 I 30.
This means that this one can take an input Voltage of 100 Volt and the one I’m buying is 75-Volt max input volt.
The higher voltage – the higher the price. Next is how many Amps it can deliver 75 I 15 means 15 Amps and this one is 30 Amps.
Smart Solar includes Bluetooth and can connect to Victron Connect App and on the app you can see how much the regulator is charging your batteries.
If you see a MPPT regulator marked with Blue solar that means that it doesn’t have the Bluetooth function and can’t connect to the Victron Connect App. But you can buy an adapter to your Blue Solar MPPT regulator and then get the connectivity and the same features. Follow the link ti Victron Energy site to learn more.
Victron Energy VE.Direct Smart Dongle (Bluetooth)
(Affiliate link to Amazon)