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

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 charge current

🔋4-stage battery charging

🛡️Built-in surge & short-circuit protection

R3419

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Description

🔆 Power your independence with precision and peace of mind!

SMART SAFETY FIRST - Comprehensive electronic protections guard against surges, overloads, and wiring errors—your system’s silent bodyguard.
ROCK SOLID RELIABILITY - HazLoc rated and engineered in the USA with a 5-year warranty for mission-critical peace of mind.
WHISPER QUIET OPERATION - Low noise design ensures your solar setup stays discreet and efficient, day and night.
MAXIMIZE BATTERY LIFESPAN - Advanced 4-stage PWM charging with temperature compensation keeps your 12V batteries healthier, longer.
EFFORTLESS ENERGY MANAGEMENT - Pre-set factory settings mean zero guesswork—plug and power up instantly.

The Morningstar SunSaver 10A PWM Solar Charge Controller (SS-10-12V) is a compact, US-designed regulator optimized for 12V solar battery systems. Featuring four-stage PWM charging, temperature compensation, and robust electronic protections, it extends battery life while safeguarding your setup. With a 5-year warranty and HazLoc rating, it’s trusted by professionals for reliable, quiet, and efficient solar energy management.

Specifications

ASIN	B002MQW3H8
Best Sellers Rank	#81,198 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #68 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
Operating Temperature	100 Degrees Celsius
Part Number	SS-10-12V
UPC	033172793449 153736796065
Unit Count	1.0 Count
Voltage	12 Volts
Warranty Description	5 years

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R3419

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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