We value your privacy.
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing
efforts.
Cookie Setting RefuseAccept All Cookies
Overview of JS-318 12volt Jump Starter
What is 12volt Jump Starter? Jump starters are devices that offer a quick and convenient method to jump-start a car or other vehicles like RVs/SUV with a dead battery. They are portable, compact, and easy to use. In this section, we will provide an overview of 12volt jump starters JS-318, including their overview, performance, compability and pratical tips.
Definition and Purpose OF 12v Battery Jump Starter
A jump starter is a device that utilizes stored power to provide a temporary boost of electrical energy to a vehicle's battery, enabling it to start the engine. It is designed to serve as a backup power source when the vehicle's battery is dead or too weak to start the engine. Jump starters are commonly used for cars, trucks, motorcycles, boats, and other vehicles that utilize a 12-volt battery. They are also beneficial for jump-starting other types of equipment, such as generators, lawn mowers, and power tools.
JS-351 Jump Starter | Carku
Specifications and Design of 12volt jump starters JS-318
Jump starters generally consist of a battery, cables, and clamps. The battery serves as the power source, providing the electrical energy required to start the vehicle. The cables are used to connect the jump starter to the vehicle's battery, while the clamps are utilized to attach the cables to the battery terminals.
The table below highlights some common JS-318 battery jump starter and their specifications:
|
Equivalent |
Type |
Voltage (V) |
Peak current(A) |
Capacity (mAh) |
Functions |
|
|
JS-351 |
Lithium |
12v |
3250A |
Lower than JS-318 |
Suitable for cars,SUV,motorcycle,boat |
|
|
JS-333 |
Lithium |
12v |
2500A |
Lower than JS-318 |
LED lighting, quick charge output, 2500A peak current. |
|
|
JS-318 |
Lithium |
12v |
1100A |
225Wh |
Using a jump starter with jump start to jumpstart a car.Used in RVs,SUV,longer lifespan. Support PD100W fast charging. |
|
|
JS-557 |
Lithium |
12v |
1500A |
Lower than JS-318 |
Using a jump starter with air compressor to inflate the tire. Max inflator up to 150PSI.Longer lifespan. |
|
|
JS-535 |
Lithium |
12v |
1500A |
Lower than JS-318 |
Portable,easy to carry anywhere as an emergency jump. And IP65 waterproof and dustproof. Common in Canada, extended lifespan compared to LR44. |
|
Jump starters are available in various sizes and designs. Some are compact enough to fit in a glove box, while others are larger and more powerful. Certain models even come equipped with built-in air compressors, flashlights, and other features, making them more versatile and practical.
In summary, jump starters are a valuable tool to have on hand for emergencies. They offer a fast and straightforward method to jump-start a vehicle, eliminating the need for another vehicle or a set of jumper cables. With the appropriate jump starter, you can quickly get back on the road.

Your vehicle's battery also has Cold Cranking Amps (CCA) and Cranking Amps (CA) ratings, typically located on the top. You'll want a jump starter with a CCA and CA rating near (ideally above) that respective number, which is usually around 400–500 for your average passenger vehicle.
Performance Comparison of JS-318 Battery Jump Starters Equivalents
Power and performance of JS-318 Portable 12v battery jump starter
1100A Peak Current | 225Wh of pure energy. From frozen roads in Iceland to the scorching deserts of Dubai, JS-318 is your all-weather, all-terrain jump starter and mobile power hub — designed for professionals, travelers, and global adventurers.
225Wh Lithium Power Core
Start Output: 12V jump start
Start Current: 500A
Peak Current: 1100A — starts up to 8.0L gas / 6.5L diesel engines
Full Charging Time: ~3 hours
Operating Temp: -20°C to 60°C — built for extremes.
Reliability and Lifespan |JS-318 Portable 12v battery jump starter
With a massive 225Wh battery, the JS-318 isn’t just a car jump starter—it’s your portable power station for home, work, and adventure. Power your essentials, wherever life takes you.
Real-World Performance That Matters:
32" LED TV (50W) → Up to 4 hours of binge-watching
Projector (60W) → Movie night for 3 hours under the stars
Laptop (60W) → Remote work anywhere for 3 hours
Wi-Fi Router (5W) → Stay connected for up to 41 hours
Car Refrigerator (35W) → Keep food and drinks fresh for 6 hours
Drone (59W) → Charge & fly for up to 3 hours
Compatibility and Applications of JS-318 jump starter Equivalents
When choosing an emergency JS-318 jump starter, compatibility is crucial. Automotive Compatibility, like gasoline engines: Up to 8.0L, Diesel Engines: Up to 6.5L, and Cars, SUVs, trucks, motorcycles, RVs, ATVs, boats, lawnmowers, and more. Supporting 12V battery systems only (not for 24V commercial trucks) ensures they fit seamlessly into your devices without causing performance issues.
Common Mistakes to Avoid with Jump Starters
One common mistake is underestimating the power requirement of your vehicle. Using a jump starter with too low a peak current may not work on larger engines, especially diesel trucks or SUVs. Always check your vehicle’s engine size and ensure the jump starter is rated for at least 500A start and 1000A+ peak for reliable performance.
Another mistake is using a jump starter as a replacement for a healthy car battery. Jump starters are designed for emergencies—not daily cold starts. If your car requires frequent jump-starting, the root issue may be a failing battery or alternator.
Finally, storing the jump starter improperly—especially in extremely hot or cold environments—can shorten its lifespan or damage its lithium battery. Keep the JS-318 in a temperature-controlled space and recharge it every 3 months if unused.
JS-318 Jump Starter: Compatibility and Versatility
The JS-318 is more than just a 12V jump starter—it’s a compact 225Wh power station built for multiple applications. With a 1100A peak current, it handles most 12V gas and diesel engines with ease.
Its PD100W USB-C, QC3.0 USB, and DC 150W output make it ideal for powering laptops, drones, routers, projectors, and even car refrigerators. Whether you’re on the road, at a campsite, or facing a blackout, the JS-318 offers dependable backup power wherever you are.
To get the most from your JS-318, match your power needs to its output specs, keep it charged regularly, and store it in a safe, dry environment. When used correctly, this versatile jump starter can be your most reliable roadside companion and emergency power hub.
FAQ
Is 12V battery jump starter enough to jump-start a car?
Yes, for the 12V battery only. You should always check your owner's manual for any special instructions, though.
How do you jumpstart a 12V vehicle?
When you turn the ignition key, the battery sends a burst of electrical energy to the starter motor, which then cranks the engine. The battery does this through a process called electrochemical reaction, where lead plates and sulfuric acid react to produce electricity.Get a 12v portable jump starter!Connect,Press,Start!
Will a 12volt jump starter start a dead battery?
Yes. The jumper cables will normally supply each power to start the car if there is not battery in it. The battery itself is going to drain some of that power, so sometimes you have to let it charge for a few minutes to get some charge back into the battery before you get enough power to the engine to start it.
Powered by advanced lithium iron phosphate (LiFePO₄) technology, the CARKU JS-78F delivers a peak current of 2300A—engineered to handle everyday driving demands with confidence. Its sleek, compact design fits easily into your trunk while providing reliable jump-start performance for cars, SUVs, and heavy-duty equipment. With integrated emergency lighting and built-in mobile device charging ports, the JS-78F is more than just a jump starter—it’s your all-in-one road companion for safety, convenience, and peace of mind wherever you go.
(Looking for Jump Starter ODM/OEM Solutions? Contact us for your exclusive quote today!)
Defy Extreme Cold with Confidence | JS-373B Heavy Duty Jump Starter
Engineered for the most demanding starts, the JS-373B delivers an impressive 7000A peak current and supports both 12V and 24V systems — making it the ideal solution for trucks, buses, heavy machinery, and more. Built with vehicle-grade 60℃ high-rate lithium cells, it ensures powerful ignition even in freezing conditions down to -40°C. Whether you're facing harsh winters or powering up large engines, the JS-373B stands ready with unmatched strength, reliability, and rapid charging support.(*For Jump Starter ODM/OEM Solutions, secure your exclusive quotation now!)
Unleash Dual Power with Our 12V & 24V Lithium Jump Starter
Engineered for heavy-duty performance, this lithium jump starter delivers up to 7000A peak current to start diesel and gasoline engines in trucks, buses, RVs, and construction equipment. Designed for 12V and 24V systems, it offers reliable power, fast activation, and broad compatibility—ideal for commercial fleets and professional roadside service.
(*For Jump Starter ODM/OEM Solutions, secure your exclusive quotation now!)

Building A, Qixing Creative Square,
Lianrun Rd., Gaofeng Community,
Dalang Street, Longhua District,
Shenzhen,Guangdong,China

WhatsApp