Stanley J45C09 450 Amp Jumper with Compressor

• 900 Peak Battery Amps / 450 Amp Instant Starting Power
• Includes a 120 PSI air compressor, DC & USB charging plugs and a high powered LED light that rotates 270 degrees
• Consists of reverse polarity alarm for safety along with a top-mounted rubber molded handle for easy grip
• Impact resistant injection molded housing
• Contains power/charge indicator and audible & visual reverse polarity alarm

My sister gave me this jump starter (model J45C09) for Christmas. I used it for the first time yesterday to jump start my car after its battery drained. The car started on the first attempt. The jumper is very easy to use, BUT the cables are VERY short, which severely limits where you can set the unit down while it is connected to the car. There is no way you could put the jumper on the ground while the cables are connected to the car. In my case (I have a Civic), I had to set the jumper on the small flat area just above the radiator. It was a precarious position because if the car had shaken much when I tried to start it, the jumper could have fallen to the ground. The only other options were to find someone to hold the jumper, or lean it against the top of the engine, which I thought might be dangerous.

So, this thing works, but if you can find a starter with longer cables, I recommend you do so.

I haven't tried using the compressor or the USB power outlet yet.

Incidentally, you have to charge the jumper for 24 hours when you first get it. You charge it using an extension cord plugged into a regular household electrical outlet.

I recommend you keep the instruction booklet with the jumper so you can refer to the instructions when you need to use it. I placed the booklet in a zip locking plastic bag and taped the bag to the jumper.

Buy Stanley J45C09 450 Amp Jumper with Compressor Now

When i first got this, it worked great. it was used to start a garden tractor and a car with a dead battery. However, the battery in the unit seems inferior, and did not hold a charge for more than about a month. Recharging was not able to get it to full charge, according to the lights on the unit. Now in the cold weather it won't hold a charge at all, and the unite is only about 9 months old. If it is to be of any value, it should have a better battery.

Read Best Reviews of Stanley J45C09 450 Amp Jumper with Compressor Here

(Update: 10/2011: We now have 4 of these. Great charger/compressor.)

I purchased 3 of these charger/compressors for my family and have had for approx one year. The battery inside definitely holds a charge. The manual says to check the charge/recharge every 60 days. Unit has convenient 3-LED system for indicating amount of charge remaining. After 4 months and after pumping up approx. 20 automobile tires, the charger I use was on 2nd of 3 LED's and still pumped fine. I also started an SUV with a dead battery. Worked fine. Agree that cables are short, but I believe they are long enough to reach the battery in conventional vehicles (Honda Pilot & Honda/Acura sedans). The light works just fine for pumping up tires and for jump starting a dead battery. This charger/compressor gets my recommendation.

Want Stanley J45C09 450 Amp Jumper with Compressor Discount?

This charger works quite well and started our car from a totally dead battery this evening. As another reviewer noted, the cables are VERY short, however. This isn't ideal, since it makes it impossible to place the unit on the ground during starting, where it really should be for safety reasons. As long as you recharge the unit once a month, it should give good service.

Have had this for over a year now. Unit is well built and so far has been very useful. Haven't had to use the jump start feature on a car but worked fine on my lawn tractor which really isn't a fair comparison. Compressor is wonderful. So much easier then hooking one up to the cigarette lighter and it has a reasonable fill rate with an accurate gauge. Weight is not to much so would be useable for almost anyone. One thing that it has is the reverse polarity alarm which I feel should be included on all these units. Anyone can make a mistake and it is good to have the extra insurance of this alarm which isn't on some units in this price range. So you ask why only three stars? It is the light. Mine broke off within the first month. It is exposed and fragile. Stanley is the only manufacturer that does this and any benefit from the flexability is far outweighed by the possibility of damage. I need these units to be a one stop solution for an emergency be it a flat tire, dead battery, or light source. I cannot depend on this unit for that reason. Nothing like changing a tire in the dark and having to search for the lug nut that dropped and rolled away to make you appreciate this. Course I always keep a flashlight in the glove box as backup but I don't swap the batteries on those as often as I should. Need to work on that.