BLACK+DECKER 300-Amp Portable Jump Starter-JUS300B - The Home Depot
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Model # JUS300B

Internet # 203480809

Store SKU # 867256

300-Amp Portable Jump Starter

BLACK+DECKER 300-Amp Portable Jump Starter

This item has been discontinued.
The Home Depot no longer carries this specific product.

$44.98 / each


Model # JUS300B

Internet # 203480809

Store SKU # 867256

BLACK & DECKER 300-Amp jump starter is designed to safely and effectively jump start your automobile's battery without the need of another vehicle. It features an innovative, low profile design for easy storage within the vehicle. This unit features a visual and audible alarm that warns against improper connections to the battery. It features a built in AC charger, simple hook up to most standard household extension cords and charge. For greater user protection the unit is equipped with a keyless ON/OFF safety switch. For added user convenience the unit has a built in area light for increased visibility.

  • Low profile design for easy storage
  • Reverse connection alarm, warns against improper hook up
  • LED battery status indicator, shows charge level of the internal battery
  • Ultra bright LED area light for increased visibility in dark areas
  • Note: Product may vary by store.

Info & Guides

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Assembled Depth (in.) 
11.25 in 
Assembled Height (in.) 
12.38 in 
Assembled Width (in.) 
4 in 
Cord Length (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Accessory outlets 
Air compressor included 
Cable gauge 
Charger type 
Product Weight (lb.) 
8.8 lb 
Recharge time (min.) 
Reserve capacity (Ah) 
Reverse Polarity Protection 
Starting current (amps) 
Voltage (volts) 
Work light included 
Warranty / Certifications
Certifications and Listings 
ETL Listed 
Manufacturer Warranty 
1 Year 


Rated 2.9 out of 5 by 13 reviewers.
Rated 2.0 out of 5.0 by Will not jumpstart a car. Only good for lawnmowers or small engines I bought this starter under the premise that it would start a car battery. I kept it charged as directed but have needed it twice and neither time would it start my car. Even though the package shows images of cars and suv's, it doesn't work. Money not very well spent since now I need to go buy a different one that will actually start my car when needed. January 5, 2015
Rated 1.0 out of 5.0 by Doesn't Work on a Mercedes Benz C class Very weak for that type of cars. Simply doesn't work. Very disappointed. September 22, 2014
Rated 2.0 out of 5.0 by Not enough AMPS!! I have a 2010 Ford Explorer 8 cylinder and this charger does not have enough power to jump start my truck. At the time my truck's battery was absolutely dead, no lights, nothing. I charged it for 48 hours like they said to do and the best I got was my lights and radio went on, but the engine would not turn over, but with the 500 amps at 89.95 the truck started easily. The 300 amps might very well charge a small car or motor cycle, but don't waste your time and spend the extra 40 bucks and get the 500 amps. So if you have a large car or Suv, beware, because on the box it says yes to Suv's, but from my experience I say NO. November 16, 2013
Rated 3.0 out of 5.0 by Worked for several years, but failed me recently. I bought the 350 Amp version (likely from HD) about 6-7 years ago. It worked great for jump starting my car and boat, as well as backing up my trailer batteries (to power the electric jack - not run all the stuff inside). Just before a recent trip with the trailer to Death Valley, my car battery discharged unexpectedly and I needed a jump. The Jump Starter showed almost fully charged, but it wouldn't start my Expedition. Knowing I might have problems on the trip, I brought the jumper, and plugged it into the 120V inverter in the car to charge it up. It was charged to green, but when I DID have a problem in a pretty remote location, it still wouldn't start the engine. Fortunately, I also had carried my small Honda generator as well as a battery charger with a high-amp engine start setting. That combination got me going. These units won't last forever - especially if they sit around for a while. I'll probably get another B&D - perhaps the 500 Amp version with the compressor. April 15, 2014
Rated 3.0 out of 5.0 by I could not wait to charge 48 hours initially. My car ran out of juice. I needed jump start right away to head out, so I bought this 300-AMP Portable Jump Starter from Black and Decker. The instruction said that I had to charge for 48 hours initially. The charging started around 7 PM, and I had to drive my car the next morning around 8 AM. I ignored the instruction and jump started my car battery. The car battery was charged. I resumed charging the jump starter for next 48 hours, but the jump starter's charge indicator was always red. I think I screwed it up. Maybe I cannot use it next time. We will see. March 17, 2014
Rated 5.0 out of 5.0 by Good unit for jumping small equipment. Bought this unit three years ago for my business. Money well spent. I have used it a number of occasions to jump lawn mowers, my sons ATV, run chain sharpeners, and a small tire compressor. It will not jump a truck I have tried twice it does not have the amps. I leave it in my trailer and rarely charge it and it has always been there and ready to go when I needed it. I am impressed with the unit and I am looking to purchase the 500 amp unit to leave in my truck. January 27, 2014
Rated 5.0 out of 5.0 by Great product Jump starter was easy to use right from the beginning December 11, 2014
Rated 5.0 out of 5.0 by great have had itfor a year and used it 3 times never charged it and it worked all 3 times just fine ! charged it figured I was pushing my luck but works great ! October 14, 2014
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