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

Will this charger charge uphill? Meaning if I have a48v battery, do I need 52v from the solar panel just to start the charger?

No, this charge controller will not charge 'uphill'. You would need enough panels in series to have more than 48V. If you absolutely need to charge 'uphill', look at Genasun.

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Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) - Charge Controllers for Solar Panels - 75V, 15 amp, 12/24-Volt

Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) - Charge Controllers for Solar Panels - 75V, 15 amp, 12/24-Volt

Product ID: 50328814

Details

Brand
Victron Energy
Color
Blue
Material
Plastic
Product Dimensions
4.7"L x 2.1"W
Voltage
24 Volts

⚡75V max input voltage

📱Bluetooth app connectivity

🔋15A max charging current

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Description

🔆 Charge smarter, live greener — power your future with Victron Energy!

COMPACT DURABLE DESIGN - Sleek, lightweight build fits anywhere and withstands up to 60°C operating temps.
MAXIMIZE SOLAR EFFICIENCY - Lightning-fast MPPT tech ensures you harvest every watt, even in partial shade.
SEAMLESS BLUETOOTH CONTROL - Monitor and customize your system remotely with the intuitive VictronConnect app.
INTELLIGENT LOAD MANAGEMENT - Automatically protects your battery by disconnecting loads at low voltage thresholds.
SMART MULTI CONTROLLER SYNC - Multiple units synchronize perfectly for scalable, optimized battery charging.

The Victron Energy SmartSolar MPPT 75V 15A charge controller is a compact, Bluetooth-enabled device designed to optimize solar panel output and extend battery life. Supporting 12/24V systems, it features advanced MPPT technology for maximum power harvesting, real-time monitoring via the VictronConnect app, and synchronized multi-controller operation for scalable solar setups. Ideal for professionals and DIYers seeking efficient, reliable solar energy management.

Specifications

ASIN	B075NQQRPD
Best Sellers Rank	#8,055 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Renewable Energy Controllers
Brand Name	Victron Energy
Color	Blue
Customer Reviews	4.7 4.7 out of 5 stars (5,322)
Display Type	LED or minimal display
Included Components	Victron Energy SmartSolar MPPT 75V 15 amp 12/24-Volt Solar Charge Controller (Bluetooth)
Item Dimensions L x W x H	4.7"L x 2.1"W x 1.8"H
Item Type Name	Victron Energy SmartSolar MPPT 75V 15 amp 12/24-Volt Solar Charge Controller (Bluetooth)
Item Weight	0.58 Kilograms
Manufacturer	Victron Energy
Material Type	Plastic
Model	MPPT 75\|15
Operating Temperature	60 Degrees Celsius
Part Number	SCC075015060R
UPC	703774384979
Unit Count	1.00 Count
Voltage	24 Volts
Warranty Description	Warranty

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