---
product_id: 414132001
title: "YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light"
brand: "yesper"
price: "₩337803"
currency: KRW
in_stock: true
reviews_count: 5
category: "Yesper"
url: https://www.desertcart.kr/products/414132001-yesper-4120a-jump-starter-12v-car-battery-jumper-starter-portable
store_origin: KR
region: South Korea
---

# 4120A peak amps - instant power 26800mAh battery - 60 jump starts Multi-port USB & DC output - versatile power YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light

**Brand:** yesper
**Price:** ₩337803
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Drive, Anywhere, Anytime!

## Quick Answers

- **What is this?** YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light by yesper
- **How much does it cost?** ₩337803 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/414132001-yesper-4120a-jump-starter-12v-car-battery-jumper-starter-portable)

## Best For

- yesper enthusiasts

## Why This Product

- Trusted yesper brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged & Reliable:** Fire-proof ABS shell with rain, dust, and drop resistance built for the adventurous professional lifestyle.
- • **Unmatched Jump Power:** Real 4120A amps to jump start all 12V gas & up to 10L diesel engines—never get stranded again.
- • **Compact & Travel-Ready:** Lightweight 1.38 lbs with sleek carry case—fits perfectly in your glove box or backpack.
- • **Emergency-Ready LED Modes:** Flash, strobe, and SOS lighting for roadside safety, camping, or any unexpected night-time situation.
- • **Massive 26800mAh Capacity:** Up to 60 jump starts on a single charge plus USB & Type-C ports to power your devices on the go.

## Overview

The YESPER 4120A Jump Starter is a powerhouse portable booster with a 26800mAh battery capable of jump-starting all 12V vehicles including gas engines and diesels up to 10L. Featuring 4120 peak amps, multi-port USB/Type-C outputs, and a rugged, compact design with emergency LED lighting, it’s engineered for professionals who demand reliability and versatility on the road or off-grid.

## Description

Buy YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light: Jump Starters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Quality product - I had bought several of these for Christmas gifts after observing it's use on my daughter's car. Today some friends were having trouble starting their car to move it in time for the plow to come in. I grabbed one still in the box and it worked perfectly right out of the box and no charging. Impressive. Ordered a couple more today.
Review: Heard from on Project farm's youtube - works great - Discovering this battery jump start pack through Project Farm's YouTube channel has been a game-changer. This compact yet powerful device lives up to its reputation, effortlessly jumping off my zero-turn mower and Chevy S10 without breaking a sweat. The convenience it offers, especially when dealing with unexpected dead batteries, is unparalleled. The ease of use is remarkable, making it a go-to solution for both my lawn equipment and my truck. It's a worthwhile investment for anyone seeking a reliable and efficient battery jump start pack that delivers on its promises. Overall, this device has earned its spot in my essential toolkit, providing peace of mind and quick solutions when I need them the most. Additionally, the build quality is impressive, giving a sense of durability and reliability. The compact design makes it easy to store in my vehicle without taking up much space. The pack's ability to jump-start both my zero-turn mower and Chevy S10 showcases its versatility, making it suitable for a range of vehicles. Considering its performance, user-friendly features, and the peace of mind it brings, this battery jump start pack is undoubtedly a valuable addition for anyone on the lookout for a dependable solution for unexpected dead batteries.

## Features

- BATTERY BOOSTER JUMP STARTER - Rated at REAL 4120-amps, the YJS40 car battery jump starter can safely jump start all 12V vehicles(up to ALL gasoline and 10.0-liter diesel engines). It can achieve 60 times jump-start on a single charge and works even in extreme climates -4~140℉. Even if the car voltage is too low or dead, pressing the “BOOST” button will force the car to restart
- 26800mAh BATTERY CAPACITY - Our YJS40 portable car jump starter has a true capacity of 26800mAh（99.16WH). Jump pack for car battery built-in USB(5V/2.4A), USB QC(5/9/12V) and Type-C(5V/3A) in/output ports. and a DC(15V/10A) port to power any DC devices, like a tire inflator, car vacuum cleaner, car refrigerator
- PORTABLE JUMP PACK - The size of our booster pack jump starter is 8.81in*3.53in*1.42in, weighs only 1.38 pounds, and is equipped with a Carry Case, which is not only very easy to carry but also convenient to store, so you don’t have to worry about clutter anymore
- LED FLASHLIGHT - This car battery jump starter is equipped with 3 LED working light modes: flash light, strobe light and SOS light. This multi-function flashlight is perfect for camping, outdoor, indoor, travel and more, and can also help you in the dark or in emergency situations
- ADVANCED DESIGN - The new YJS40 series car starter jump box is made of fire-proof ABS material, which is more sturdy and durable for an adventurous life, and has multi-function (rain, dust, and drop resistance
- DSLI IV INTELLIGENT CONTROL TECHNOLOGY - YESPER YJS40 car jumper starter portable. Compared with the previous generation technology, the reassembly of the DSLI IV structure and microcomputer control program increases the voltage by 30% to 14.8V, and the starting current peak value is up to 4120A, achieving 1 second car start. The powerful intelligent temperature control technology reduces the starting temperature, helping you start faster, stronger and safer
- IN THE BOX - YJS40 Car Jump Starter, Heavy-Duty Jumper Clamps, USB to Type C Cable, Cigarette Lighter Adapter, Carrying case, User Manual. If you have any questions or concerns, please get in touch with us

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Q15SPZJ |
| Amperage | 4120 Amps |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #34,886 in Automotive ( See Top 100 in Automotive ) #289 in Jump Starters |
| Brand | YESPER |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,205) |
| Date First Available | January 8, 2022 |
| Item Weight | 3.23 pounds |
| Item model number | YJS40 |
| Manufacturer | YESPER |
| Manufacturer Part Number | YESPER |
| Product Dimensions | 3.94 x 3.94 x 3.94 inches |

## Product Details

- **Battery Cell Composition:** Polymer
- **Brand:** YESPER
- **Product Dimensions:** 8.82"D x 3.53"W x 1.72"H
- **Vehicle Service Type:** Passenger Car, Motorcycle, ATV, RV, UTV, Truck,Snowmobile, Lawn Mower
- **Voltage:** 12 Volts

## Images

![YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light - Image 1](https://m.media-amazon.com/images/I/719DQPNdHPL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Will it start a completely dead battery?**
A: I started a vehicle with stolen battery, just use "boost" button. This button forces voltage to be present from YESPER even when no voltage detected from target. The normal safety protocol requires target voltage to be detected before YESPER will supply voltage itself this safety is YESPER proving correct cable hookup. In my nobattery present jump the Vehicle started right up and remained running. Obviously, target vehicle died the instant I removed YESPER and I did not let YESPER stay connected but a few seconds. The point of here is to say yes, it will start when a vehicle with a totally dead battery.

**Q: Can transport it abroad?**
A: Dear Customer:

Which country are you from? If you are interested in our products, we are willing to arrange another shipping specially for you. For further communication, you can email us. We provide a timely online response for our customers.

Sincerely
Yesper

**Q: Is this yesper set up to allow for faster home charging, like using a 30w usb c charger wall adapter? or some other way to speed that up? thanks!**
A: No box say's 15 watts input! Got one from amazon works great.

**Q: If after hooking this up and cranking the starter it does not start what steps need to take place to try and start it again?**
A: Ok...when you read the little booklet it will tell you...there is a little button near the blinking green light you press to fully energize...that should get you your solid green light.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product
*by R***Y on December 30, 2025*

I had bought several of these for Christmas gifts after observing it's use on my daughter's car. Today some friends were having trouble starting their car to move it in time for the plow to come in. I grabbed one still in the box and it worked perfectly right out of the box and no charging. Impressive. Ordered a couple more today.

### ⭐⭐⭐⭐⭐ Heard from on Project farm's youtube - works great
*by A***B on November 22, 2023*

Discovering this battery jump start pack through Project Farm's YouTube channel has been a game-changer. This compact yet powerful device lives up to its reputation, effortlessly jumping off my zero-turn mower and Chevy S10 without breaking a sweat. The convenience it offers, especially when dealing with unexpected dead batteries, is unparalleled. The ease of use is remarkable, making it a go-to solution for both my lawn equipment and my truck. It's a worthwhile investment for anyone seeking a reliable and efficient battery jump start pack that delivers on its promises. Overall, this device has earned its spot in my essential toolkit, providing peace of mind and quick solutions when I need them the most. Additionally, the build quality is impressive, giving a sense of durability and reliability. The compact design makes it easy to store in my vehicle without taking up much space. The pack's ability to jump-start both my zero-turn mower and Chevy S10 showcases its versatility, making it suitable for a range of vehicles. Considering its performance, user-friendly features, and the peace of mind it brings, this battery jump start pack is undoubtedly a valuable addition for anyone on the lookout for a dependable solution for unexpected dead batteries.

### ⭐⭐⭐⭐⭐ My second! Will buy a third eventually!
*by R***L on January 15, 2026*

My second one after 4 years of being used at least 4 times a week with my first one! I’ve jumped little cars, big cars, diesel trucks, big cargo trucks, recharged phones, tablets, laptops, and it kept going. It did start ballooning, but keeps working. I’m just not trusting the unit to not start on fire eventually. Highly recommend and will buy again in 4 years!

## Frequently Bought Together

- 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
- ALL-TOP Adjustable Auto-Stop Tire Deflator Valve Kit (10-30 PSI) 4 PCS Screw-on Tyre Air Down Tool for Offroad 4x4 (with 5 Valve caps)
- ORCISH 98PCS Tire Repair Kit, Professional Heavy Duty Tire Plug Kit, Tire Patch Kit for Fix a Flat, Tubeless Tire Puncture Change Tool Kit for Car, Motorcycle, Truck, ATV, Tractor, RV, SUV, Trailer

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*