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Product Specifications
Warranty1 year warranty
Weight8 Pounds
Technical Details
- Stanley J309 Jump Starter (300 Amp)
- ETL listed
- 300 ampere instant starting power
- 12 volt USB light
- Energy star
- 12V Usb Light
- Desulfation Technology
- Etl Listed Product
- 300 Amp Instant Starting Power
Product Details
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Product Description
Stanley 300 ampere jump starter has desulfation technology. It is ETL Listed and has 300 ampere instant starting power with a 12 volt USB light.
Customer Reviews
Most Helpful Customer Reviews
48 of 49 people found the following review helpful
Amazon Verified Purchase
Awesome! Plenty of jump start power. Purchased 1 from Amazon & another from my local hardware store(same model). Used 4 times in the last few days on our fleet vehicles. Cars/trucks/vans...no problems. Charging is easy on this model, just plug it in with an ordinary household AC extension cord or use the DC adapter supplied. Also, this unit has an on/off switch. My old one didn't so the terminals were 'HOT' all the time. Life saver device, well worth the bucks!
12 of 12 people found the following review helpful
Amazon Verified Purchase
I bought this jumper to jump my motorcycle. The battery goes dead every winter and I am not in an area where I would be able to keep the battery charged over the winter (I am forced to park the thing out on the street). Anyway, this jumper works great - I plugged it in, let it charge for a day (although I don't think it requires a full day to charge) and jumped my bike right up - the battery on my bike was completely dead prior to the jump. Very easy, no problems.
11 of 11 people found the following review helpful
My battery wouldn't hold a charge and I used this every day for 4 months to start my car and it exceeded my expectations. I never expected it to last that long, but with charging once every 3 weeks or so it worked fine. Small, portable, and much easier than jumper cables. Highly recommended.
Most Recent Customer Reviews
DEFECTIVE UNIT
SORRY BUT THIS UNIT (FAIRLY NEW) WILL NOT HOLD A CHARGE LONGER THAN A DAY. hStanley 300Amp w/12V USB Jump StarterHOW CAN I GET IT SERVICED?
Published 7 days ago by NEILUS
Do Not Buy!!!!!!!
Bought this to replace a ten year old Jump Starter which worked great throughout its lifespan. This one failed to jump start a riding lawn mower...twice after "full" charges. Read more
Published 23 days ago by IA Guy
It is USELESS unless you chrage it and won't forget to charge again...
If this unit needs to be charged when your car is stuck on the street and needs a jump start, what's it for? Read more
Published 28 days ago by Jeff
Works as advertised, but needs additional cord for charging
Before I get into how the actual unit performs, I want to clarify that in order to charge this unit, you will need an additional power cord. Read more
Published 1 month ago by JarretM
Useless
Nice features, well constructed. I plug it in to charge it up once a month. (more often than suggested) I let it charge for two full days when I charge it, indicators read full... Read more
Published 1 month ago by DGM
Great Buy!
I bought this jumper pack 2 years ago and I love it......as long as its fully charged it will always start your car. Read more
Published 2 months ago by Eric Long
Lightweight charger
This has already proved to be a real asset. After initial charge, was able to start lawn tractor on the first try even though it had an absolutely dead battery. Read more
Published 2 months ago by Donald E. Austin Jr.
Very bad quality. Does not charge. Not enough juice.
I charged the item (per the instructions) for 24 hours before use. The green light came on solid green. It could not jump start a BMW battery. Then I charged it for 72 hours. Read more
Published 3 months ago by old_customer
Horrible
I had a dead battery on our SUV and attempted to jump it with this Stanley starter. It did not have the juice to jump the battery. I am trying to figure out how to return.
Published 4 months ago by Jeffrey Nielsen
Lifesaver
My old bike from 1991 has a lot of trouble starting on cold mornings, and this is the perfect booster for when my bike battery just can't crank hard enough. Read more
Published 4 months ago by kevin
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