Can controller be installed in battery compartment (somewhat limited in space). RV application, 2-6volt batteries, 1-100 watt panel.

Yes, as long as installation is not too close to batteries and the area is vented to avoid potential gassing / corrosion issues. And to allow for proper temperature sensing if the unit has only a built in sensor the controller should be is the same area as the batteries.

Does this unit alternate voltage based on battery temperature?

The charger will compensate for temperature based on it's internal sensor, essentially gauging the local environment's temperature. An option Smart Battery Sense can be attached to the battery for true battery temperature. Those are new and in short supply, but should be fully available by the end of June, 2018.

what is the difference between smart solar and blue solar?

The single difference between them is that the SmartSolar MPPTs have Bluetooth built-in so that you can monitor and configure them through the VictronConnect smartphone app. The BlueSolar MPPTs do *not* have the Bluetooth built-in; you can use a VE.Direct to Bluetooth Dongle to achieve the same functionality, but the cost of a SmartSolar ends up a little less (typically) than a BlueSolar MPPT +a VE.Direct to Bluetooth Dongle, so it usually makes more sense to order the SmartSolar. If you're not planning on monitoring the MPPT or changing any of the settings, however, a BlueSolar will be just fine, as the actual circuitry is virtually identical. Regards, -Justin Mobile Power Pros / Bay Marine Supply

The item i received says 48v on the side. will it work with 12v/24v systems?

Even though the mppt has the 48V stamp, it will work with 12V 24V & 48V systems. The 48V is to differentiate it from the 12V/24V only mppt. Here is documetation from Victron showing it will work with all three Voltages. https://www.victronenergy.com/upload/documents/Datasheet-SmartSolar-charge-controller-MPPT-75-10,-75-15,-100-15,-100-20_48V-EN.pdf

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🔋 Charge smarter, live brighter — power your future with Victron Energy!

SEAMLESS SYNC - Multiple controllers sync perfectly for optimized, system-wide battery health.
COMPACT POWERHOUSE - Lightweight 540g design packs 90W of efficient solar charging in a sleek form.
MAXIMIZE EVERY RAY - Lightning-fast MPPT tech ensures peak solar power output even in shade.
SMART CONNECTIVITY - VictronConnect app gives you real-time data, 30-day history & remote control.
LOAD WITH CONFIDENCE - Intelligent load output protects your battery by auto-disconnecting at low voltage.

The Victron Energy SmartSolar MPPT 100V 20A 48V Solar Charge Controller with Bluetooth optimizes solar energy harvesting using advanced MPPT technology. It supports synchronized multi-controller setups, real-time monitoring via the VictronConnect app, and intelligent load management to extend battery life. Compact and lightweight, it delivers up to 90W charging power, making it ideal for professional-grade solar energy systems.

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Item weight	0.54 Kilograms
Display type	LCD
Operating temperature	6E+1 Degrees Celsius
EU Spare Part Availability Duration	1 Years
UPC	810019980657
Manufacturer	Victron Energy
Model	Victron Energy SmartSolar MPPT 100V 20 amp 48-Volt Solar Charge Controller (Bluetooth)
Product Dimensions	21 x 5 x 15 cm; 540 g
Item model number	MPPT 100\|20
Manufacturer Part Number	SCC110020160R
Wattage	90 watts
Item Weight	540 g

Victron EnergySmartSolar MPPT 100V 20 amp 48-Volt Solar Charge Controller (Bluetooth)

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