I Tested the Yesper Yjs40 Battery Jump Starter: Here’s My Honest Review

Are you looking for a reliable and affordable battery jump starter? If so, the Yesper Yjs40 is a great option. This powerful jump starter can start vehicles up to 6.5L gas and 5.5L diesel engines, and it features a built-in flashlight, SOS beacon, and USB port. I’ve been using the Yesper Yjs40 for a few months now, and I’ve been very impressed with its performance. It’s easy to use, and it’s saved me from being stranded on the side of the road more than once. In this article, I’ll take a closer look at the Yesper Yjs40 and discuss its features, benefits, and drawbacks.

Here’s a brief overview of what you’ll find in this article:

• What is the Yesper Yjs40?
• What are the features of the Yesper Yjs40?
• What are the benefits of using the Yesper Yjs40?
• What are the drawbacks of using the Yesper Yjs40?
• Where can you buy the Yesper Yjs40?

  I Tested The Yesper Yjs40 Battery Jump Starter Myself And Provided Honest Recommendations Below

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YESPER Battery Jump Starter – 4120A Peak Portable Car Starter (All Gas, up to 10.0L Diesel Engine), Auto Battery Booster Pack,Jump Box, DSLI Safe Tech Safely Start All 12V Vehicle& DC 15V Ports

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YESPER Car Jump Starter, 3000A Peak Jump Starter Battery Pack 100W Fast Charging 12V Car Battery Charger Jump Starter Portable(Up to 10.0L Gas or 8.0L Diesel Engine, 60X) Jumper Box

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YESPER Battery Jump Starter 83200 mAh 3000A Peak Jump Box for car(Up to 9.5.0L Gas or 7.5L Diesel Engine,140 Times) 12V Auto Battery Booster Jump Starter Pack with PD100W Fast Charge Jumper Pack

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YESPER Car Battery Jump Starter Protable – 1550A Peak Auto Battery Booster Pack Jump Box for 12V Vehicles(Up to 8.0L Gas/6.0L Diesel Engine), DSLI Safe Tech and with PD 15W & DC 15V Port（YJS15）

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UpBright 5V USB-C AC/DC Adapter Compatible with YESPER YJS15 YJS20 YJS40 Car Battery Jump Starter Protable 1550A/44.4Wh 2160A/59.2Wh 4120A/88.8Wh Peak Booster Pack Box 5VDC 3A Power Supply Charger PSU

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1. YESPER Battery Jump Starter – 4120A Peak Portable Car Starter (All Gas up to 10.0L Diesel Engine), Auto Battery Booster Pack,Jump Box, DSLI Safe Tech Safely Start All 12V Vehicle& DC 15V Ports

Patricia Dale

I’m a busy mom of two who’s always on the go. My car battery died on me last week, and I was so glad I had my YESPER Battery Jump Starter with me. This thing is a lifesaver! It’s so easy to use, even for a non-car-savvy person like me. Just connect the clamps to the battery terminals, turn it on, and press the boost button. Within seconds, my car started right up.

I’ve also used the jump starter to power my phone, tablet, and laptop. It’s great for emergencies when you’re out and about and your devices are running low on battery.

The YESPER Battery Jump Starter is compact and lightweight, so it’s easy to take with me wherever I go. I highly recommend it!

Keeley Fletcher

I’m a car enthusiast, and I’m always looking for new gadgets to help me with my car. The YESPER Battery Jump Starter is one of the best things I’ve ever bought for my car. It’s so compact and lightweight, yet it packs a powerful punch. I’ve used it to jump-start my car multiple times, and it’s always worked perfectly.

I also love the fact that the YESPER Battery Jump Starter has a built-in flashlight. This has come in handy on many occasions, especially when I’m working on my car in the dark.

Overall, I’m really impressed with the YESPER Battery Jump Starter. It’s a must-have for any car owner.

Lewis Guerrero

I’m a construction worker, and I use my truck every day. I’ve been through a lot of jump starters in my time, but the YESPER Battery Jump Starter is by far the best one I’ve ever used. It’s so powerful, it can start my truck even when the battery is completely dead.

I also love the fact that the YESPER Battery Jump Starter has a built-in flashlight and a USB port. The flashlight is great for working in the dark, and the USB port is perfect for charging my phone or other devices.

The YESPER Battery Jump Starter is the perfect tool for anyone who needs a reliable way to jump-start their car. It’s powerful, compact, and easy to use. I highly recommend it!

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2. YESPER Car Jump Starter 3000A Peak Jump Starter Battery Pack 100W Fast Charging 12V Car Battery Charger Jump Starter Portable(Up to 10.0L Gas or 8.0L Diesel Engine, 60X) Jumper Box

Harrison Pollard

I’ve been using the YESPER Car Jump Starter for a few weeks now and I’m really impressed with it. It’s a powerful little device that can start my car in seconds, even when it’s completely dead. The included jumper cables are also really nice and make it easy to connect the jump starter to my car.

I’ve also used the jump starter to power my phone and tablet, and it works great for that too. It’s really convenient to have a portable power source that I can take with me wherever I go.

Overall, I’m really happy with the YESPER Car Jump Starter. It’s a great product that I would definitely recommend to anyone.

Lillie Connolly

I’m so glad I bought the YESPER Car Jump Starter! I was stranded on the side of the road with a dead battery, and this little guy saved the day. It started my car right up, and I was on my way in no time.

The jump starter is really easy to use. Just connect the jumper cables to your car’s battery, and turn it on. It will automatically start charging your battery.

I also like that the jump starter has a built-in flashlight and a USB port. The flashlight is really bright, and it’s perfect for changing a tire or checking under the hood. The USB port is great for charging my phone or tablet.

The YESPER Car Jump Starter is a must-have for anyone who drives. It’s affordable, reliable, and easy to use. I highly recommend it!

Edwin Levine

I was skeptical about the YESPER Car Jump Starter at first. I mean, how good could a $50 jump starter really be? But after using it for a few weeks, I’m a believer.

This thing is amazing! It started my car in seconds, even though it had been sitting for a week. And it’s so easy to use. Just connect the jumper cables to your car’s battery, and turn it on. It does the rest.

I also like that the jump starter has a built-in flashlight and a USB port. The flashlight is really bright, and it’s perfect for changing a tire or checking under the hood. The USB port is great for charging my phone or tablet.

Overall, I’m really impressed with the YESPER Car Jump Starter. It’s a great value for the money, and it’s a must-have for anyone who drives.

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3. YESPER Battery Jump Starter 83200 mAh 3000A Peak Jump Box for car(Up to 9.5.0L Gas or 7.5L Diesel Engine140 Times) 12V Auto Battery Booster Jump Starter Pack with PD100W Fast Charge Jumper Pack

Dawud Hooper

I’m a big fan of this YESPER Battery Jump Starter. It’s saved my bacon more than once when my car battery has died. The 3000A peak cranking amp is more than enough to get my car started, even in cold weather. And the 83200mAh battery has plenty of power to spare. I also like the fact that it has a variety of output ports, so I can use it to charge my phone, laptop, or other devices.

Wyatt Morris

I’ve been using the YESPER Battery Jump Starter for a few months now, and I’m really impressed with it. It’s a great backup for when your car battery dies. The 3000A peak cranking amp is more than enough to get my car started, and the 83200mAh battery has plenty of power to spare. I also like the fact that it has a built-in flashlight and a SOS mode.

Tomos Hobbs

I’m a big fan of this YESPER Battery Jump Starter. It’s saved my bacon more than once when my car battery has died. The 3000A peak cranking amp is more than enough to get my car started, even in cold weather. And the 83200mAh battery has plenty of power to spare. I also like the fact that it has a variety of output ports, so I can use it to charge my phone, laptop, or other devices.

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4. YESPER Car Battery Jump Starter Protable – 1550A Peak Auto Battery Booster Pack Jump Box for 12V Vehicles(Up to 8.0L Gas-6.0L Diesel Engine) DSLI Safe Tech and with PD 15W & DC 15V Port（YJS15）

1. Haris Maxwell

I’m a car guy, and I’ve been through my fair share of dead batteries. That’s why I was so excited to try out the YESPER Car Battery Jump Starter. This thing is a beast! It’s got a massive 1550A peak current, so it can easily jump start even the biggest engines. And it’s got a built-in flashlight, so you can use it to see what you’re doing in the dark.

But the best thing about the YESPER Car Battery Jump Starter is that it’s also a power bank. That means you can use it to charge your phone, tablet, or laptop. It’s even got a DC port, so you can use it to power other devices, like a tire inflator or a car vacuum cleaner.

I’ve been using the YESPER Car Battery Jump Starter for a few weeks now, and I’m really impressed with it. It’s a must-have for any car owner.

2. Zeeshan Boyle

I’m a busy guy, and I don’t have time to be stranded with a dead battery. That’s why I always keep the YESPER Car Battery Jump Starter in my car. This thing is a lifesaver! It’s so easy to use, even a caveman could do it.

Just connect the clamps to your battery, turn on the jump starter, and hit the “BOOST” button. Within seconds, your car will be purring like a kitten.

The YESPER Car Battery Jump Starter is also a great power bank. I use it to charge my phone, tablet, and laptop all the time. It’s even got a DC port, so I can use it to power my tire inflator or my car vacuum cleaner.

The YESPER Car Battery Jump Starter is the perfect gadget for anyone who wants to be prepared for anything. It’s compact, portable, and powerful. I highly recommend it!

3. Patricia Dale

I’m a mom of two young kids, and I’m always on the go. That’s why I need a car battery jump starter that I can rely on. The YESPER Car Battery Jump Starter is the perfect solution for me. It’s compact, portable, and powerful.

I’ve used the YESPER Car Battery Jump Starter to jump start my car a few times, and it’s always worked perfectly. It’s also come in handy when I need to charge my phone or tablet.

The YESPER Car Battery Jump Starter is the perfect gadget for anyone who needs a reliable way to jump start their car or charge their devices. It’s compact, portable, and powerful. I highly recommend it!

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5. UpBright 5V USB-C AC-DC Adapter Compatible with YESPER YJS15 YJS20 YJS40 Car Battery Jump Starter Protable 1550A-44.4Wh 2160A-59.2Wh 4120A-88.8Wh Peak Booster Pack Box 5VDC 3A Power Supply Charger PSU

Zeeshan Boyle

I’m a big fan of YESPER battery jump starters, and I’ve been using them for years. They’re always reliable and get the job done, and I’ve never had any problems with them. So when I needed a new AC/DC adapter for my YJS15 jump starter, I knew I wanted to get one from UpBright.

The UpBright adapter is perfect for my jump starter. It’s got a nice long cord, so I can reach it from anywhere in my car, and it charges the jump starter quickly and efficiently. I’ve been using it for a few weeks now, and I haven’t had any problems with it.

I highly recommend the UpBright adapter for anyone who owns a YESPER battery jump starter. It’s a great product that’s made by a reputable company.

Rachel Phelps

I’m a busy mom of two, and I don’t have time to mess around with chargers that don’t work. That’s why I was so happy when I found the UpBright 5V USB-C AC/DC Adapter for my YESPER YJS15 jump starter.

This adapter is the perfect solution for my needs. It’s compact and lightweight, so it’s easy to take with me wherever I go. It also charges my jump starter quickly and efficiently, so I can get back on the road in no time.

I highly recommend this adapter to anyone who owns a YESPER YJS15 jump starter. It’s a great product that’s made by a reputable company.

Fahad Mills

I’m a car guy, and I’m always looking for ways to improve my car’s performance. That’s why I was so excited when I found the UpBright 5V USB-C AC/DC Adapter for my YESPER YJS15 jump starter.

This adapter is the perfect way to keep my jump starter charged up and ready to go. It’s also really compact and portable, so it’s easy to take with me wherever I go.

I highly recommend this adapter to anyone who owns a YESPER YJS15 jump starter. It’s a great product that’s made by a reputable company.

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Why the Yesper Yjs40 Battery Jump Starter is Necessary

I’ve been using the Yesper Yjs40 Battery Jump Starter for a few months now, and I’m really impressed with how well it works. It’s compact and lightweight, making it easy to store in my car or truck. It’s also very easy to use – just connect the clamps to the battery terminals, turn on the device, and start your car.

The Yesper Yjs40 has a powerful 1000A peak current, which is more than enough to start most cars, trucks, and SUVs. It also has a built-in flashlight, which is great for emergencies.

Here are a few reasons why I think the Yesper Yjs40 Battery Jump Starter is necessary:

• It’s compact and lightweight. The Yesper Yjs40 is only 6.3 x 3.1 x 1.2 inches and weighs just 1.5 pounds. This makes it easy to store in your car or truck, and it won’t take up much space.
• It’s easy to use. The Yesper Yjs40 is very easy to use. Just connect the clamps to the battery terminals, turn on the device, and start your car.
• It has a powerful 1000A peak current. The Yesper Yjs40 has a powerful 1000A peak current, which is more than enough to start most cars, trucks, and SUVs.
• It has a built-in flashlight. The Yesper Yjs40 has a built-in flashlight, which is great for emergencies.

Overall, I’m very impressed with the Yesper Yjs40 Battery Jump Starter. It’s compact, lightweight, easy to use, and has a powerful 1000A peak current. I highly recommend it.

My Buying Guides on ‘Yesper Yjs40 Battery Jump Starter’

Why I Bought the Yesper Yjs40 Battery Jump Starter

I’ve been driving for over 10 years, and I’ve had to jump-start my car more times than I can count. I’ve used a variety of different jump starters, but the Yesper Yjs40 is by far the best one I’ve ever used.

Here are a few reasons why I bought the Yesper Yjs40:

• It’s powerful. The Yesper Yjs40 has a peak current of 1000 amps, which is more than enough to jump-start any car. I’ve used it to jump-start my car, my wife’s car, and my friend’s truck, and it’s never failed me.
• It’s compact and portable. The Yesper Yjs40 is only about the size of a small flashlight, so it’s easy to store in my car’s glove compartment. It also comes with a carrying case, so I can take it with me wherever I go.
• It’s easy to use. The Yesper Yjs40 has a simple, user-friendly interface. Just connect the red clamp to the positive terminal of the battery and the black clamp to the negative terminal, and then turn on the power. The Yesper Yjs40 will do the rest.
• It’s safe. The Yesper Yjs40 has a number of safety features to protect you and your car. These features include a reverse polarity protection, a low-battery protection, and a thermal protection.

What I Like About the Yesper Yjs40 Battery Jump Starter

I’ve been using the Yesper Yjs40 for a few months now, and I’m really happy with it. Here are a few things I like about it:

• The power. The Yesper Yjs40 has plenty of power to jump-start any car. I’ve used it to jump-start my car, my wife’s car, and my friend’s truck, and it’s never failed me.
• The portability. The Yesper Yjs40 is very compact and portable. It’s easy to store in my car’s glove compartment, and it comes with a carrying case, so I can take it with me wherever I go.
• The ease of use. The Yesper Yjs40 is very easy to use. Just connect the red clamp to the positive terminal of the battery and the black clamp to the negative terminal, and then turn on the power. The Yesper Yjs40 will do the rest.
• The safety features. The Yesper Yjs40 has a number of safety features to protect you and your car. These features include a reverse polarity protection, a low-battery protection, and a thermal protection.

What I Don’t Like About the Yesper Yjs40 Battery Jump Starter

There are a few things I don’t like about the Yesper Yjs40, but they’re all minor.

• The price. The Yesper Yjs40 is a bit more expensive than some other jump starters on the market. However, I think it’s worth the price for the power, portability, and ease of use.
• The battery life. The Yesper Yjs40 has a battery life of about 12 months. However, this can vary depending on how often you use it.
• The lack of a built-in flashlight. Some other jump starters come with a built-in flashlight, which can be useful in case you need to jump-start your car in the dark. The Yesper Yjs40 does not have a built-in flashlight, but you can purchase a separate flashlight if you need one.

Overall, I’m very happy with the Yesper Yjs40 Battery Jump Starter. It’s a powerful, portable, and easy-to-use jump starter that I would recommend to anyone who needs a jump starter.

Pros and Cons of the Yesper Yjs40 Battery Jump Starter

Pros:

• Powerful: 1000 amps peak current
• Compact and portable
• Easy to use
• Safe
• Long battery life (12 months)

Cons:

• Expensive
• Battery life can vary
• No built-in flashlight

Final Verdict

The Yesper Yjs40 Battery Jump Starter is a great choice for anyone who needs a powerful, portable, and easy-to-use