Victron EnergyBlueSolar MPPT Solar Charge Controller - Charge Controllers for Solar Panels - 75V, 15 amp, 12/24-Volt

I tested the unit with combinations of 1 , 2 and 3 panels in series. It performed well in all 3 tests. The current increased in almost the exact multiple of the number of panels. The only down side is not being able to adjust the voltage parameters of the charge. To monitor or adjust requires an additional part. (bluetooth adapter)This is a decent tradeoff, since the unit seemed to recognize the battery type and control correctly. Just dont know the float voltage setpoint. This is 2 to 3 times the price of a PWM model but truly worth it. Dont waist money on cheap PWM models, the MPPT will give you the output you deserve from your panels.

Worked great. My only wish is that the company develop an app to interface with BT for Mac or Windows OS. Or publish the BT protocol so that independent developers can write apps for Mac or Windows OS.

Truly impressed. Well-designed, an accurate and informative app for your phone, and capabilities far beyond what I need. Be sure to set your battery type in the app. I've run the 100/15 and the 75/15 with three different portable solar panels and the results have been very positive. Highly recommended.

Since I installed the Victron 75/15A solar charge controller, my panels perform almost 100%.This solar charge controller allows for custom adjustments that make it very versatile.I would like to suggest to manufacturers that they add at least a heat deciption, even if it is minimal.I don't give it five stars because in my experience I've noticed that it gets quite hot in summer.

This comment is just a "heads up" about ordering.This is my 3rd Victron controller. The first two had Bluetooth capability. Wanting another 75/15 controller I reflexively ordered a second thinking I was getting a "SmartSolar" controller.Oops!Instead I ordered a "BlueSolar" model controller which LACKS the BlueTooth capability to connect to your phone via the VictronConnect app. This apps allows the user to monitor the SoC of the batteries, the amount of voltage and current from the solar panels, voltage and actual current current to the batteries. If one wants BlueTooth with the BlueSolar, one must also order the "V.E. Direct" BlueTooth interface module. Else, order the "SmartSolar" model that has BlueTooth built in. (In either case, the VictronConnect app is downloadable at no charge.

worked well and easy to use. got good performance compared to the cheap mppts

Love this controller. It was working all winter for the battery at my chicken coop (for night light). The controller was set for streetlight and would turn on the lights at dusk for about 4 hours.One thing to note is that if you want connectivity with another device, like your smartphone, be sure to get the Bluetooth version. I didn’t and also ended up getting the add on Bluetooth. The one I installed for my RV has Bluetooth built in which reduces the amount of wires.

Works great and the Bluetooth with the Victron app is great.