---
product_id: 414132001
title: "YJS40"
brand: "yesper"
price: "A$168"
currency: AUD
in_stock: true
reviews_count: 8
category: "Yesper"
url: https://www.desertcart.com.au/products/414132001-yjs40
store_origin: AU
region: Australia
---

# 4120A peak jump power 26800mAh high-capacity battery Multi-port USB & DC output YJS40

**Brand:** yesper
**Price:** A$168
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Drive — Never Get Stranded Again!

## Quick Answers

- **What is this?** YJS40 by yesper
- **How much does it cost?** A$168 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/414132001-yjs40)

## 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

- • **Unmatched Jump Power:** Instantly jump-starts all 12V vehicles, including gas and up to 10.0L diesel engines, with a massive 4120A peak current.
- • **Compact & Travel-Ready:** Lightweight 1.38 lbs design with a sleek carry case fits effortlessly in your glove box or backpack.
- • **Versatile Charging Hub:** Equipped with USB, USB QC, Type-C, and DC ports to power your devices and car accessories anywhere.
- • **Emergency-Ready LED Light:** 3-mode LED flashlight (flash, strobe, SOS) ensures safety and visibility in any roadside or outdoor emergency.
- • **Long-Lasting Battery Life:** 26800mAh polymer battery delivers up to 60 jump starts per charge—your ultimate roadside lifesaver.

## Overview

The YESPER 4120A Jump Starter is a compact yet powerhouse 12V booster with a 26800mAh polymer battery, capable of jump-starting all gas and large diesel engines up to 10.0L. Featuring advanced DSLI IV technology for rapid, safe starts, multi-port charging options, and a rugged, portable design with emergency LED lighting, it’s engineered for professionals and adventurers who demand reliability and versatility on the road.

## 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: Compact and Portable, great power output - The YESPER 4120A Peak Jump Starter is a powerful, reliable, and versatile tool that every driver should consider having in their car. Here’s my detailed review after using it: Pros: High Power Output: With a peak current of 4120A, this jump starter can handle even large vehicles like trucks and SUVs. It’s highly effective for starting dead batteries in seconds. Compact and Portable: Despite its impressive power, the device is surprisingly compact and lightweight, making it easy to store in your car or carry around. Versatile Functionality: In addition to jump-starting, the device doubles as a portable power bank. The USB ports are great for charging phones, tablets, and other devices on the go. Safety Features: The built-in safety features, including overcurrent, overvoltage, and short-circuit protection, ensure safe operation, even for users who aren’t mechanically inclined. LED Flashlight: The integrated flashlight with multiple modes (including SOS) adds extra utility, especially in emergencies or low-light conditions. Durable Build: The rugged casing is designed to withstand drops and tough conditions, making it suitable for outdoor and emergency use. Cons: Price: The YESPER Jump Starter is on the higher end of the price spectrum, but the performance and features justify the investment. Charging Time: It takes a few hours to fully charge the device, so it’s essential to keep it charged regularly for emergencies. Cable Length: The included jumper cables are slightly shorter than some users might prefer, which could be limiting in certain setups. Final Thoughts: The YESPER 4120A Peak Jump Starter is a must-have tool for anyone who wants peace of mind on the road. Its powerful performance, safety features, and additional functionalities make it worth every penny. Whether you’re dealing with a dead battery or just need a reliable power source on the go, this jump starter won’t let you down. Highly recommended for both personal and professional use.
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 |
| Battery Capacity | 26800 Milliamp Hours |
| Battery Cell Composition | Polymer |
| Battery Type | Polymer |
| Best Sellers Rank | #56,039 in Automotive ( See Top 100 in Automotive ) #243 in Jump Starters |
| Brand | YESPER |
| Brand Name | YESPER |
| Compatible with Vehicle Type | Passenger Car, Motorcycle, ATV, RV, UTV, Truck,Snowmobile, Lawn Mower |
| Customer Reviews | 4.5 out of 5 stars 1,251 Reviews |
| Item Dimensions D x W x H | 8.82"D x 3.53"W x 1.72"H |
| Manufacturer | YESPER |
| Manufacturer Part Number | YESPER |
| Model Number | YJS40 |
| Peak Output Current | 4120 Amps |
| 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 |

## 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

![YJS40 - 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

### ⭐⭐⭐⭐⭐ Compact and Portable, great power output
*by J***W on December 30, 2024*

The YESPER 4120A Peak Jump Starter is a powerful, reliable, and versatile tool that every driver should consider having in their car. Here’s my detailed review after using it: Pros: High Power Output: With a peak current of 4120A, this jump starter can handle even large vehicles like trucks and SUVs. It’s highly effective for starting dead batteries in seconds. Compact and Portable: Despite its impressive power, the device is surprisingly compact and lightweight, making it easy to store in your car or carry around. Versatile Functionality: In addition to jump-starting, the device doubles as a portable power bank. The USB ports are great for charging phones, tablets, and other devices on the go. Safety Features: The built-in safety features, including overcurrent, overvoltage, and short-circuit protection, ensure safe operation, even for users who aren’t mechanically inclined. LED Flashlight: The integrated flashlight with multiple modes (including SOS) adds extra utility, especially in emergencies or low-light conditions. Durable Build: The rugged casing is designed to withstand drops and tough conditions, making it suitable for outdoor and emergency use. Cons: Price: The YESPER Jump Starter is on the higher end of the price spectrum, but the performance and features justify the investment. Charging Time: It takes a few hours to fully charge the device, so it’s essential to keep it charged regularly for emergencies. Cable Length: The included jumper cables are slightly shorter than some users might prefer, which could be limiting in certain setups. Final Thoughts: The YESPER 4120A Peak Jump Starter is a must-have tool for anyone who wants peace of mind on the road. Its powerful performance, safety features, and additional functionalities make it worth every penny. Whether you’re dealing with a dead battery or just need a reliable power source on the go, this jump starter won’t let you down. Highly recommended for both personal and professional use.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Won't let you down.
*by L***R on March 15, 2026*

I purchased in September of 2023. It's worked great every time I've used it. I'm currently purchasing a second one because it's great product and it's cheap investment to have. Don't let the price mislead you it really is a great product, I use it for work and this second one will be for at home. Im sure I'll be buying a few more for my kids.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/414132001-yjs40](https://www.desertcart.com.au/products/414132001-yjs40)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-08-17*