Stanley is a well-known company which produces one of the best battery jump starters on the market right now. Their J5C09 model is a top shelf one and has a premium performance at a budget price. With its 1000 peak amps it ensures a stable crank even at non-ideal conditions. Sure, there are models with more amps than that but they fall behind in every other field such as design, portability, rigidity, and most importantly cost. There are tons of other features will create a user-friendly product which is also a reliable companion both in and out of your car as it has outlets for charging any of your devices. Whether every interesting quirk and feature of the J5C09 is enough to make it your top pick is something you are about to find out.
Our Verdict: We recommend the Stanley J5C09 to any driver who wants an added layer of protection to his trips as it is a very durable and cheap portable jump starter. It is potent enough to crank most engines and has features such as an air compressor in case you run into a flat tire situation.
Continue reading to find out why this model earned such a high user rating.
Features That Make It Stand Out
The first thing we want to talk about is the body of this battery. It not only looks rigid, but also feels super durable. There are 4 bolts at the front which hold a metal plate to the body of the unit. There is a water insolation all-around which helps with rainy situations. The control panel is at the top of the jump starter and it packs several control options as well as a few slots which we will discuss in a little bit.
Above everything rises the handle which is big and comfortable and makes the J5C09 feel far lighter than it actually is. Speaking of that, it is important to note that this jump starter isn’t exactly the epitome of lightweight and small but having a portable jump starter with an air compressor in this form factor will always be an impressive feature. Of course, you cannot compare it to models such as the FlyHi Portable Jump Starter in terms of weight but then again, this thing packs so much more power than those tiny portable batteries/jump starters.
In terms of connectivity and indicators, there are plenty on top of the body of this model. It has a USB charging port for all your mobile devices which is covered by a protective cover. Right next to that (again below the cover) lies a 12V DC socket. Moving further to the right, there are two buttons which are for the USB connection (On/Off) and for the battery status. Once you press the status button the lights above it light up to indicate the level of charge stored within the battery.
The battery itself has a good electric potential, in which we will dive into a bit later but in terms of longevity it isn’t the greatest according to our tests. When left unused it hardly makes it through 1-2 months and that is in good conditions. It’s safe to say that if you will be using this battery in extreme weather you will have to charge it at least once per month even when not using it.
Now, let’s move on to perhaps the most important part of this unit:
The Power Capabilities
As advertised, you will be getting 1000 peak amps worth of power. The starting amps are around 500 and are potent enough to crank up even a 3-liter diesel engine. It is pretty straightforward to use as well and there are no risks for your health. If you connect something the wrong way, there is an alarm to warn you about it.
Mobile devices can be charged a seriously insane amount of times before the battery gets drained. Let’s just say that if you have a new iPhone, you will be able to charge it at least 20 times even if your jump starter hasn’t been fully charged at the start. After all, there has to be enough power to charge devices, jump start a car, and inflate its tires through the compressor. In fact, let’s give this feature a little more light.
The Air Compressor
This feature deserves every bit of attention it can get. Even if you’ve never experienced a dead battery situation, you must have at least seen a flat tire on a friend’s car. It is a very unpleasant scenario where a portable air compressor would feel like a godsend. This particular compressor operates at 120 PSI which is more than enough to fill out a full set of tires in a matter of minutes without draining the battery.
Another great addition to the array of features on this model is the built-in flashlight. It can turn around at almost 360 degrees making it a nice little addition to the already packed of tools jump starter you are getting.
Most buyers can agree that the J5C09 performs as well as the manufacturer claims, however, in order to keep this jump starter powered up and ready to go, you must recharge it once a month, otherwise the battery is quickly and is essentially ruined.
Additionally, the jump starter doesn’t support trickle charging. Because of this, you’ll need to unplug the jump starter after use in order to prevent overcharging the battery. For most buyers this isn’t an issue, but if you’re used to jump starters that support trickle charging, which most modern models do, then this can be a drawback.
Keep in mind that the amps needed to turn over a vehicle’s starter will heavily depend on the vehicle’s engine size. Cars with a smaller engine will be easier to start up, while a larger engine can take several tries. Also, if the battery is totally drained you may have more trouble getting this jump starter to bring your battery back from the dead. Before you buy this machine, make sure it has enough amps for your specific vehicle. If you’re not sure whether or not this model is right for you, contact customer service for help.
The jump starter’s USB charger and emergency light buttons are both great features to have, but clearly, the manufacturer didn’t think the location of their placement through. Both can easily be turned on when the jump starter moves around in a trunk. When turned on, these features can quickly drain the battery. In order to avoid issues with this design oversight, make sure you have the jump starter securely placed in your trunk, making it impossible for the machine to move around. Always make sure you check that it’s completely shut off when you add or remove anything from the trunk. Hopefully the manufacturer will rethink this design issue for future models.
Air Compressor Feedback
There was some mixed feedback regarding the air compressor once it was put to the test. Some argue that the compressor offered more than enough power to easily maintain tire pressure, while others claim that the compressor takes too long and is only able to air up tires up to forty PSI. Over time, the air compressor may lose some of its power and struggle to air up tires past thirty PSI. Fortunately, this isn’t a common issue, but if your jump starter is experiencing this manufacturing defect you can rest assured that it’s covered by the product warranty.
Should you experience this problem make sure you contact customer service for repairs or a replacement.
Overall, the jump starter offers a solid, reliable performance, when fully charged.
If you want to learn more about portable jump starters and other cool features like that, check out our Buyer’s Guide where you will find any information you need regarding your first purchase and understand the technology behind this invention. Now, let’s see some of the most notable pros and cons of the J5C09:
- Good peak amps
- Great construction
- Weighs less than competing jump starters
- Relatively cheap
- Has a built-in 120 PSI air compressor
- 12V DC socket / USB combo
- Battery life indicators
- Highly portable
- Bad battery life
- Emergency light and USB charger can accidentally get switched on
- Manufacturing defect may cause air compressor to lose power over time
- Does not support trickle charge