Is the output voltage range adjustable? I have a 24v lead acid battery bank and want to keep a 27.5v charge. Is this possible?

It is. You can actually set up both float and absorbtion voltage, as well as absorbtion duration . You can also run equalization manually or automatically. You do it all using a cell phone app.

I have 2 260w solar panels rated at 38.1voc. Im trying to set up a 12v battery bank that this will charge. Will the 150v/35A be too big for my system?

520 watts (panels) / 13.5 volts (charging voltage) = 38.5 amps. Since you will likely never see 100% efficiency from your panels, 35 amps on the controller is appropriate. If for some reason you got all 520 watts, no harm done, just a few amps unused for a few minutes at Noon on a perfect day. The voltage on the panel side is irrelevant as long as it is below the max rating on the controller.

Can i put 4 in series, w/ 48v battery? 4 panels x 37.44 v = 149.76 v 4 panels x 8.68 a = 34.68 a

Something to keep in mind is on a very cold day your voltage of the panels can go a few volts higher than normal, if that exceeds the 150 volt max of the controller you risk damaging it. You would definitely be better off with 2 in series and 2 in parallel. Just make sure your wiring can handle 20 amps vs 10 amps you would need to handle all 4 in series. Otherwise you'd need to step up to a charge controller with a higher voltage rating to prevent damage on a cold day. If you exceed the amperage it doesn't hurt anything, you just don't get the full output of the array, but if you exceed the voltage it will fry it.

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Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) - Charge Controllers for Solar Panels - 150V 35 amp 12/24/36/48-Volt

Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) - Charge Controllers for Solar Panels - 150V 35 amp 12/24/36/48-Volt

Product ID: 53353222

Details

Brand
Victron Energy
Color
No Color
Material
Plastic
Product Dimensions
8.07"L x x
Voltage
12 Volts (DC)

⚡150V max input voltage

📱Bluetooth app connectivity

🔋35A max charging current

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2062 Lei

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Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

SMART APP CONTROL - Full system monitoring and configuration via VictronConnect app on your phone.
MAXIMIZE SOLAR EFFICIENCY - Lightning-fast MPPT tech extracts every watt, even in partial shade.
INTELLIGENT LOAD MANAGEMENT - Auto disconnect protects your battery by cutting power when voltage drops low.
SEAMLESS MULTI CONTROLLER SYNC - Multiple units sync perfectly for optimized battery health and power flow.
VERSATILE BATTERY COMPATIBILITY - Supports 12/24/36/48V batteries to fit any off-grid or mobile setup.

The Victron Energy SmartSolar MPPT 150V 35A charge controller uses advanced maximum power point tracking to optimize solar energy harvest and battery longevity. Bluetooth connectivity via the VictronConnect app enables real-time monitoring, configuration, and firmware updates. Compatible with 12 to 48V battery systems, it supports synchronized multi-controller setups and intelligent load management for reliable, efficient off-grid power solutions.

Specifications

ASIN	B073ZHRG9K
Best Sellers Rank	#31,967 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #16 in Renewable Energy Controllers
Brand Name	Victron Energy
Color	No Color
Customer Reviews	4.6 4.6 out of 5 stars (585)
Display Type	LCD or LED
Included Components	Victron Energy SmartSolar MPPT 150V 35 amp 12/24/36/48-Volt Solar Charge Controller (Bluetooth)
Item Dimensions L x W x H	8.07"L x 5.12"W x 3.54"H
Item Type Name	Victron Energy SmartSolar MPPT 150V 35 amp 12/24/36/48-Volt Solar Charge Controller (Bluetooth)
Item Weight	1.6 Kilograms
Manufacturer	Victron Energy
Material Type	Plastic
Model	SCC115035210
Part Number	SCC115035210
Unit Count	1.0 Count
Voltage	12 Volts (DC)
Warranty Description	Warranty

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