What's the maximum size panel I can use with this controller?

100 Watts. You need to add 20% headroom. A 100 (watts solar panel) divided by 12 (battery voltage) equals 8.33 multiplied by 1.20 (20%) equals 10 (solar charge controller amperage)

Do I need to run my load through the controller, or can it go directly to battery? What are the advantages of running through the controller?

I'm afraid several have misunderstood the question. Without a low-voltage disconnect, the load connections on the controller are provided merely for connection convenience. It should be the same as connecting your load directly to the battery. There is no low-voltage protection either way. Unless you purchase the unit that contains the LVD

Morningstar controllers are manufactured in a fully automated world-class ISO 9001 facility in Taiwan.

Will this work with my 160w panels on my motorhome

yes it will works, because the solar panel will produce about 10 A/h

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Morningstar SunSaver 10A PWM Solar Charge Controller (SS-10-12V) - Solar Panel Regulator for 12V Batteries, Four Stage Battery Charging, HazLoc Rated, Low Noise, 5 Year WTY - Designed in The USA | Four-stage charging, temp compensation, HazLoc rated, load control, reverse polarity protection, 5-year warranty

Morningstar SunSaver 10A PWM Solar Charge Controller (SS-10-12V) - Solar Panel Regulator for 12V Batteries, Four Stage Battery Charging, HazLoc Rated, Low Noise, 5 Year WTY - Designed in The USA | Four-stage charging, temp compensation, HazLoc rated, load control, reverse polarity protection, 5-year warranty

Product ID: 1755301

Details

Brand
Morningstar
Color
white/black
Item Weight
8 ounces
Product Dimensions
6"L x 2.18"W x
Voltage
12 volts

⚡10A PWM precision charging

🔋4-stage battery life optimization

🛡️HazLoc safety rated

€ 190.29

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

PLUG PLAY SIMPLICITY - Factory presets and electronic protections make installation foolproof and fast.
MAXIMIZE BATTERY LONGEVITY - Advanced 4-stage charging with temperature compensation extends battery health and performance.
EFFORTLESS POWER MANAGEMENT - 10A PWM controller ensures efficient, low-noise solar charging for your 12V battery system.
TRUSTED AMERICAN INNOVATION - Backed by Morningstar’s 5-year warranty and industry-leading reliability since 1993.
BUILT FOR SAFETY DURABILITY - HazLoc rating plus reverse polarity and overload protection safeguard your investment.

The Morningstar SunSaver 10A PWM Solar Charge Controller (SS-10-12V) is a compact, reliable solar regulator designed for 12V battery systems. Featuring four-stage PWM charging with temperature compensation, it maximizes battery life while providing robust electronic protections including HazLoc certification, reverse polarity, and overload safeguards. With easy installation, low noise operation, and a 5-year warranty, it’s a trusted solution engineered in the USA for efficient, safe solar energy management.

Specifications

ASIN	B002MQW3H8
Best Sellers Rank	#38,174 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #29 in Renewable Energy Controllers
Brand Name	Morningstar Corporation
Color	white/black
Customer Reviews	4.5 4.5 out of 5 stars (116)
Display Type	LCD
EU Spare Part Availability Duration	5 years
Included Components	CONTROLLER
Item Dimensions L x W x H	6"L x 2.18"W x 1.32"H
Item Weight	8 ounces
Manufacturer	Morningstar Corporation
Model	SS-10-12V
Number of Items	1
Operating Temperature	100 °C
Part Number	SS-10-12V
UPC	033172793449 153736796065
Unit Count	1 Count
Voltage	12 volts
Warranty Description	5 years

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