The YESPER Fast MAX is a portable jump starter and power bank. Besides, It is a powerful and fast device that jump-start cars, UTVs, motorcycles and others vehicles.
YESPER Fast MAX features
- Boost Start 100% Dead Car. The Fast Max battery jump starter is the ultimate solution for starting completely dead car batteries, with a whopping 4120 amps peak cranking power. Further, suitable for 12V vehicles up to ALL Gas/10L Diesel engines, including cars, RVs, etc. Up to 80 jump starts on a single charge.
- 100W Lightning-Fast Charging. The jump starter battery pack fully charges in just 1h with PD100W USB-C fast charging and the included 100W car charger. With only a 5-minute charge, you can start your car in an emergency. When fully charged, this device can hold the electricity up to 36 months.
- 3.3-Inch Intuitive LCD Panel. The car jump starter’s 3.3-inch smart screen offers all the necessary information about its operational status, battery level, and any potential errors. Ensuring also a hassle-free jump-start process by keeping you informed every step of the way, making it easy for anyone to use.
- DSLI IV Intelligent Safe Tech. This utilizes cutting-edge DSLI IV Intelligent Safe Tech, which boosts voltage by 30% to 14.8V and delivers a more steady cranking current of up to 4120A. Besides, it has intelligent temperature control technology, Fast Max can reduce the start-up temperature and operate normally in temperatures ranging from -4℉ to 140℉, ensuring faster, safer, and more stable car starts.
- Rugged & Dependable Jump Box. The portable battery jumper starter’s tough construction and built-in flashlight make it also perfect for vehicle emergencies. Its IP65-rated case is waterproof, dustproof, and also drop-proof, ensuring reliable protection in any situation.
- What You Will Get. 1*4120A Jump Starter (27000mAh), 1 *Jumper Cable, 1*100W Car Charger, 1*60W USB-C to C Cable, 1*Cigarette Lighter Socket Adapter, 1*User Manual; Furthermore, we stand behind our jump pack with an 18-month free warranty, lifetime technical support, and 24/7 customer service.
YESPER YJS20 Advantages & Disadvantages
| Advantages | Disadvantages |
|---|---|
| ✔️ Versatility: It is a powerful and portable device that also functions as a 27000mAh USB power bank and a 12/15-volt DC power source. Besides, it makes it perfect for outdoor activities and emergencies. | ✖️ Battery capacity: It has a low capacity, it discharges quickly. |
| ✔️ Durable: The FAST MAX smart jumper cable boasts high quality ABS material clamps that are resistant to wear and tear from long-term use. | |
| ✔️ Safe Car Jumper Starter: It has 10 safety protections: spark-proof, mistake-proof and reverse-polarity protection, keeping you and also your vehicle, secure in any situation. |
How to use this jump starter
Using the YESPER Fast MAX jump starter is a straightforward process:
- Connect the Clamps: Attach the red clamp to the positive terminal and then, the black to the negative terminal of your vehicle’s battery.
- Power On: Press the power button on the YESPER Fast MAX to activate it.
- Start Your Vehicle: Turn the ignition key, and then, the jump starter will supply the necessary power to start it.
How to Maintain Your YESPER Fast MAX
If you own a portable jump starter or are considering getting one, it’s crucial to understand how to keep it in top-notch condition
- Regular Inspection for Optimal Performance of Your YESPER Fast MAX Car Battery Jumper
- Proper charging is crucial to maintain the functionality of your YESPER Fast MAX car battery jumper.
- Storage. Proper storage is equally important, especially if you don’t use your YESPER Fast MAX frequently.
- Regularly testing your jump starter ensures that it’s in working condition when you need it.
- Whenever possible, store your YESPER Fast MAX portable jump starter in a moderate temperature environment between 50 ºF – 70 ºF. Like vehicle batteries, exposure to extreme temperatures is detrimental to jump starter batteries, both in the short term and long term.
- Respect the cycles. Every jump starter is subject to a duty cycle in which the vehicle can be cranked only so long before a period of rest is needed. For almost all jump starters, the recommended duty cycle is between 5-6 seconds of cracking followed by 3-5 minutes of rest.
- Clean clamps. A battery in poor condition may have battery acid on the posts, so wiping down the clamps after jump starting a vehicle always is a good practice to keep the clamps from becoming corroded
If you want more information about how to maintain your car battery jumper click here.
User Reviews
J. Williams – ★★★★★ (5/5)
It works
Bought this after watching a review on amazon about it. Gave it to my brother for Christmas. He has used it multiple times and it works.
P. King -★★★★☆ (4/5)
This item is a real deal
This item should be in every car and RV. Besides, it comes in a great hard case and is easy to setup and use. Love It.
Ariadne –★★★★★ (5/5)
Buy it
Well worth your money this has saved me numerous times and the battery on this thing is also AMAZING!