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 Corporation SS-10L-12V SunSaver 10 Amp Charge Controller LVD by Morning Star

Product ID: 316912271

Details

Brand
Morningstar
Colour
Black
Item weight
281 g
Material
Aluminum
Voltage
12 Volts

⚡10A max solar/load current

🌡️T5 temp rating up to 100°C

🛡️UL/CSA hazardous location certified

1168.27 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your small systems with confidence and style!

SAFETY FIRST ALWAYS - Comprehensive surge, short-circuit, and reverse polarity protection with built-in diagnostics to prevent costly errors.
BUILT TO BRAVE THE ELEMENTS - Epoxy encapsulated, marine-rated terminals, and tropicalized design ensure rugged reliability in any environment.
EFFORTLESS POWER MANAGEMENT - Set it and forget it with advanced 4-stage PWM charging that maximizes battery life and efficiency.
INDUSTRY LEADING DURABILITY - Fanless thermal engineering and polycarbonate casing deliver the lowest hardware failure rate and a 5-year warranty.
CERTIFIED FOR CRITICAL ENVIRONMENTS - Meets UL/CSA Class 1, Division 2 standards—perfect for oil, gas, and other demanding industrial settings.

The Morningstar SunSaver 10A PWM Solar Charge Controller is a compact, rugged, and highly reliable 12V controller designed for small solar setups. Featuring advanced 4-stage charging, tropicalized epoxy encapsulation, and marine-rated terminals, it excels in harsh environments. Certified for hazardous locations and backed by a 5-year warranty, it offers industry-leading durability and comprehensive electronic protections, making it the trusted choice for professionals who demand performance and peace of mind.

Specifications

ASIN	B007NNF66K
Brand Name	Morningstar Corporation
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (23)
Display Type	LED
Global Trade Identification Number	04250983244304
Item Weight	0.62 Pounds
Manufacturer	Morningstar Corporation
Material Type	Aluminum
Model	SS-10L-12V
Number of Items	1
Operating Temperature	100 Degrees Celsius
Part Number	SS-10L-12V
Unit Count	1.0 Count
Voltage	12 Volts

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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1168.27 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews