Location: Home » Solar Panels » SunGuard SG-4 4.5 amp 12 volt Solar Charge Controller Regulator by Morningstar

SunGuard SG-4 4.5 amp 12 volt Solar Charge Controller Regulator by Morningstar

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Brand: Morningstar
Category: Lawn & Patio

Buy New: $29.95 (On sale from $39.99)
as of 9/5/2010 14:44 EDT details
You Save: $10.04 (25%)

New (6) from $29.95

Seller: Big Frog Mountain
Rating: 5.0 out of 5 stars

1 reviews
Sales Rank: 7312

Shipping Weight (lbs): 1

Model: SG-4
ASIN: B000O3O0W2

Availability: Usually ships in 1-2 business days

Features:

•	Vdc (voltage direct current): 12 V
•	Solar Amps: 4.5 A
•	Weight: .5 lbs./.22 kg
•	Dimensions: 2.5" x 2.0" x 1.4"/63.5 x 50.8 x 35.56 mm
•	Warranty info: 5 year warranty from manufacturer

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Editorial Reviews:

Product Description
A nice small, economical controller for 12V solar panels that produce less than 4.5 amps. Uses the same high performance circuitry as the more expensive SunSaver line. Epoxy encapsuated for marine environments. Easy to connect. These charge controllers are extremely reliable and have a 5 year manufacturer's warranty.

Customer Reviews:
5 out of 5 stars

Simple and effective May 19, 2010
R. Mahood (Parker, CO USA)
I installed the SG-4 with a 50 watt solar panel on a motor home. This setup replaces a non-functional 7-watt panel that was supposed to keep the coach batteries charged. The controller is mounted behind the coach monitor panel and I connected it to the original solar charge wiring, which made the installation pretty easy. It is pretty much install and forget and it has worked perfectly for 2 years. The system has kept the two 6 volt house batteries and a 12 volt chassis battery fully charged while the RV has been in winter storage as long as two months unattended. It works as advertised and keeps the batteries healthy. It has internal circuitry (diodes I suppose) that keep the batteries from discharging back through the panels at night. Since it is only rated to 4.5 amps, you would not be able to use much more than 50 watts of panels with this controller. That means it is not suitable where you have to have a lot of energy to recharge batteries quickly. But for charge maintenance, this is perfect.

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