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RoadPro 300 Watt 12-Volt Heater

Wires Directly to Vehicle Battery

Price: $ 42.95

Top Features:

  • Compact size fits just about anywhere
  • Adjustable Fan Speed
  • Use to Help Defrost Windows or Help Warm Bunk Area
  • Switch from Heat to Air
  • Directly Wire to Battery for Secure Connection

RoadPro - 300 Watt 12-Volt Heater - RPSL-681

300 Watt 12-Volt Heater

  •  Availability:
  •  In Stock
  •  Weight:
  •  Shipping:
  •  See Cart
  •  Tax:
  •  Paid
  •  Manufacturer:
  •  RoadPro
  •  Model No.:
  •  RPSL-681
  •  Dimension:
  •   8"W x 6 3/4"D
  •  Height:
  •  6 1/4"h
  •  Warranty:
  •  90 Days
  •  Returns:
  •  Non Returnable, Warranty Exchange ONLY

  • Shipping GuideShipping Guide


  • Includes Installation Hardware
  • Include installation Instructions

12 Volt Heater Back View

 12 Volt Heater Back View

RoadPro's 12-Volt Direct Wire 300 Watt Heater has a Fan Setting & Adjustable Swivel Stand. Comes with all mounting hardware for easy installation. For when you need a little extra heat.

Need a More Powerful Heater? Click here to see Power Hunt Hellfire Quartz Heater

I found a great review for this heater, that offers a little more understanding of what to expect, so I thought I would clean it up and copy it here for our customers.

4 / 5

"This is not a bad heater. I Installed it in our case 75XT at work and it works good. The cab is enclosed with a door. The heater worked better than expected after our last snow fall a week ago. It was in the machine for about 4 hours and I thought it wasn't working good at all, until I got out of the machine and realize how freaking cold it was. It won't bake you in a machine, but it does help to take the edge off."

"Also, here is a little tip. Go to the auto parts place and pick up a starter relay from an old truck 70s 80s it doesn't matter. Then wire the hot from the battery to a 30 amp inline fuse, then to one side of the relay (the main post), then from the other main post to the heater. Then find the auxiliary wire from the ignition and rout a wire to one of the small post, (you will have to test both post to see which one opens and closes the relay. For me it was the one to the left.) And that's it. When you turn the ignition on and off the heater will to. Just leave the on switch for the heater on. Yes it has an on and off switch but what I've been experiencing is the guys, me included, aren't used to having it in the machine and it would get left on and then the battery would be dead. So having that relay is great. You never have to worry about it again. hope this helps."

Will the Heater Work in my Application?    How Long Will My Battery Last?

Please Note: 12-Volt Electric Blankets and 12-Volt Heaters may only be returned for repair or replacement

Other Features:

  • Size: 8" x 6 3/4" x 6 1/4"
  • 150 Watt/300 Watt (12.5 Amp/25 Amp)
  • Draws less power than a hair dryer

Other Photo

12 Volt Heater Box