The COONYES S306 is more than just a battery jump starter—it’s a versatile, portable powerhouse that offers both emergency vehicle assistance and everyday charging capabilities. Designed to fit neatly under your seat but pack a punch of 2000A peak current, this smart car jump starter is a must-have for drivers who want performance, reliability, and safety at a budget-friendly price.
The COONYES S306 is engineered to provide quick and safe jump starts for standard 12V vehicles, including sedans, SUVs, motorcycles, boats, and even light-duty trucks. Thanks to its 2000A peak current, it can handle engines up to 7.0L gasoline or 5.5L diesel, even in harsh conditions from -4°F to 140°F. With one full charge, this unit can support up to 50 jump starts, making it highly dependable on the road.
Beyond its jump-starting capabilities, the S306 doubles as a 62.16Wh portable power bank with dual 5V/2A USB ports. This allows for simultaneous charging of two mobile devices up to 80% faster than typical chargers—perfect for road trips, camping, or emergencies.
The built-in LED flashlight offers three handy modes: steady light, strobe, and SOS—ideal for roadside breakdowns at night. In a truly life-saving touch, the base of the device includes an emergency window breaker, providing a quick escape option in case of an accident.
And for peace of mind, the S306 comes equipped with 10 layers of smart protection, including reverse polarity, anti-spark, over-voltage, short-circuit, and thermal protection. Smart jumper cables provide both visual and audible alerts to ensure even first-time users can operate the device safely and correctly.
One of the standout aspects of the COONYES S306 is its incredibly affordable price. At just $25.19 (as listed in the US), it offers exceptional value for a jump starter that combines power, safety, and convenience. Whether you’re building an emergency car kit or need a secondary charger for your devices, the S306 is a budget-friendly tool that doesn’t compromise on performance.
Get Offer - Buy on Amazon
Users praise the COONYES S306 for being lightweight, compact, and user-friendly. Weighing only 12.32 ounces, it’s one of the most portable jump starters available and fits comfortably under the car seat or in a glove compartment.
Many users report that the device comes fully charged right out of the box, so it’s ready for immediate use. The LED flashlight earns points for brightness and utility during night-time breakdowns, while the window breaker adds an extra layer of emergency preparedness that’s often overlooked in similar devices.
Its jump-starting performance is consistent and powerful, and its ability to double as a fast-charging USB power bank makes it a handy tool beyond just emergencies. From routine errands to long-distance drives, the COONYES S306 proves itself to be both dependable and multi-functional.
If you're looking for a compact, affordable, and effective car jump starter that also doubles as a power bank and emergency tool, the COONYES S306 is an excellent choice. It’s ideal for everyday drivers, students, and families, especially those who value versatility in a small package.
While it may not cater to larger diesel vehicles or those needing premium features, it shines in reliability, ease of use, and emergency readiness. For just over $25, it delivers a level of performance and peace of mind typically found in products double its price.
Q1. What vehicles can the COONYES S306 Jump Starter handle?
The COONYES S306 can start 12V vehicles with up to 7.0L gas or 5.5L diesel engines, including cars, trucks, motorcycles, RVs, boats, and lawnmowers.
Q2. How many times can the COONYES S306 start a car on a full charge?
It can deliver up to 50 jump starts on a single full charge, making it a dependable tool for multiple emergencies.
Q3. Can I charge my phone with the COONYES S306?
Yes, it features two 5V/2A USB ports that allow you to charge smartphones, tablets, and other USB-powered devices quickly.
Q4. Does the COONYES S306 come with safety features?
Absolutely. It includes 10 smart protection systems such as reverse polarity, short circuit, overheat, and anti-spark technology.
Q5. Is the COONYES S306 suitable for winter or extreme weather?
Yes, it's designed to operate in temperatures from -4°F to 140°F, making it reliable even in extreme cold or heat.
Comments