
Stanley J509 1000 Peak Amp Jump Starter
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The Stanley J509 1000 Peak Amp Jump Starter is one of the top selling jump starters on Amazon and it lives up to the expectations. There’s a reason it gets a 4.1 out of 5 star rating and has over 332 reviews!
Think of the Stanley J509 1000 Peak Amp Jump Starter as CPR for your car! It allows you to jump your battery back to life without the need of another vehicle. It packs 500 amps of instant starting power as well as 1000 peak amps. With heavy duty metal clamps, Number 6 AWG cables, a high powered LED light that rotates 270 degrees and a charge indicator the Stanley J509 1000 Peak Amp 12 volt Jump Starter is ideal for every day use or roadside emergencies.
Table of contents
We’ve all been there… you climb into your car, turn the key and click, click, click. The dreaded dead battery! And it never happens when you have hours to spare, right?
Whether it’s extreme heat or cold or you simply left the lights on, batteries die for all sorts of reasons. The good news is most of them can be jumped back to life. The bad news is most people rely on the old method of jumping their battery with the help of jumper cables and another vehicle. But what if you don’t have either?
Not to worry… Stanley has the solution to your problem. The Stanley J509 1000 Peak Amp Jump Starter allows you to jump your battery back to life without the need of another vehicle. It packs 500 amps of instant starting power as well as 1000 peak amps. Think of it as CPR for your car! With heavy duty metal clamps and Number 6 AWG cables, the is as safe as it is reliable. It also features a high powered LED light that rotates 270 degrees and a charge indicator.
The Stanley J509 1000 Peak Amp Jump Starter is simple to use. Simply hook the clamps to your battery, turn on the switch and start your vehicle. It’s also safe to use because you cannot hook it wrong. If you do, an audible alarm will sound reminding you to switch the clamps to the proper polarity.
Charging

DC Plugin
The optional DC plug also allows you to charge the Stanley J5C09 1000 Peak Amp Jump Starter with your vehicle’s DC port. Plug it in and keep it ready to go at a moment’s notice.
Multiple Uses

With cell phones, tablets, laptops and gaming systems ever more present in our everyday lives, who couldn’t use a little extra power on the go when those devices get low?
USB Charging
Charge two devices at once with the USB and 12 volt DC port!
LED Light
If your battery go dead when it’s dark, no problem! The ultra bright LED light swivels 270 degrees and shines light just where you need it.
Operating the Stanley J5C09 1000 Peak Amp Jump Starter
Frequently Asked Questions
Here is some of the frequently asked questions that people have about the Stanley J5C09 1000 Peak Amp Jump Starter with Built in Compressor.
Is there a Automatic Float Charging System?
I don't have this one, but I do have the last version, and after taking mine apart, here is what I can say. While there are lights on the front that tell you when the battery is full, I have found not proof or evidence of any float in it to keep it from over charging. My opinion, while it should not hurt much to leave it is for a short period of time after it is fully charged, I would keep somewhat in mind to make sure that it is not left charging for extended lengths of time. Doing so can damage the battery in it. If you do damage the battery in it, replacement batteries can be bought and installed for around half the price of one of these.
Can this unit be plugged in to 110 power, in the charge mode, 24-7 with out doing damage by over charging it?
The instructions say “You cannot overcharge this unit using the AC charging method.” However, elsewhere in the manual it says “overcharging will reduce battery life.” But if you charge it DC you should not exceed 6 hours of charging time.
How long will it retain its charge when not used and still work?
They claim 30 days. You should charge it once every 30 days . I’ve had mine since Oct 22 and it’s still at full charge. It’s very well built and seems like a very good jump pack.I would recommend this one.
Hi guys, could you please tell me what cable are you using to charge the unit when at home? Reviews say there is no cable with the unit.
All you need is a standard three-prong, grounded extension cord to charge the unit. It should be charged indoors, and it has no special requirements. It has a plug built into the charger that’s covered with a rubber cap.
Technical Details
Product Name | Stanley J509 1000 Peak Amp Jump Starter |
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Brand | Stanley Tools |
Item Weight | 18 Pounds |
Product Dimensions | 11.2 x 6.8 x 13.5 inches |
Item Model Number | J509 |
Battery Composition | Lead Acid |
Voltage | 12 Volts |
Peak Amps | 1000 Amps |
Cold Cranking Amps | 500 Amp |
Cable Length | N/A |
Cable Type | #6 AWG Cables |
Clamp Type | Heavy Duty Clamps |
Integrated Air Compressor | No |
Integrated Air Gauge | No |
Max Gauge Pressure | N/A |
Compressor Hose Length | N/A |
Charger | Built Into Unit. Charge via Standard Extension Cable or Included Male-Male 12V Extension |
Charge Voltage | 110 Volts |
Charge Protection | No |
Recharge Using 12V Power | N/A |
12 Volt Accessory Plug | Yes |
USB Socket | Yes |
Light | Yes |
Reverse Polarity Alarm | Yes |
Warranty Period | 1-Year Limited Warranty |
Price (Approx.) | $99.99 |
Domestic Shipping | This item is also available for shipping to select countries outside the U.S. |
International Shipping | This item is not eligible for international shipping. |
Should You Buy the Stanley J509 1000 Peak Amp Jump Starter.
For over 170 years, STANLEY® has been synonymous with quality, reliability, innovation and value, and there jump starter range of product have all been built with these standards in mind.
The Stanley J509 professional quality and great price point is certainly a major factor in why over 332 people have reviewed this on Amazon. And its ease of use is another contributing factor, anyone who can use jumper cables can use the Stanley J509.
The multi use capabilities of the Stanley J509 will tick a lot of the boxes for many people, especially in an emergency the ability to charge usb devices as well as the convienience of a light are very re assuring features.
Based on the overwhelmingly positive reviews for this product, purchasing the Stanley J509 1000 Peak Amp Jump Starter is highly recommended for anyone who is looking for a dependable and capable portable jump starter. Throw in the USB charging and additional light all for under $100 and we can’t see why every home should not own one.