---
product_id: 628772972
title: "J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines"
brand: "lokithor"
price: "¥22028"
currency: JPY
in_stock: true
reviews_count: 9
category: "Lokithor"
url: https://www.desertcart.jp/products/628772972-j400-portable-jump-starter-for-upto-8-0l-gas-6
store_origin: JP
region: Japan
---

# 2000A peak current Fast USB charging + 300-lumen LED 6400mAh lithium polymer battery J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines

**Brand:** lokithor
**Price:** ¥22028
**Availability:** ✅ In Stock

## Summary

> 🚗⚡ Power up your ride & your peace of mind—jumpstart like a pro!

## Quick Answers

- **What is this?** J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines by lokithor
- **How much does it cost?** ¥22028 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/628772972-j400-portable-jump-starter-for-upto-8-0l-gas-6)

## Best For

- lokithor enthusiasts

## Why This Product

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

## Key Features

- • **Real-Time Control:** Large 5.75-inch smart display keeps you informed with battery status and alerts for confident, stress-free use.
- • **Compact Yet Mighty:** Lightweight (450g) and pocket-sized, fits effortlessly in your glove box—power and portability in one sleek package.
- • **Instant Power Surge:** Jump start dead batteries up to 8.0L gas & 6.0L diesel engines with 2000A peak current—never get stranded again.
- • **ConnectMax Smart Tech:** Automatic connection detection optimizes output for faster, safer starts—goodbye failed jump attempts.
- • **Multi-Use Emergency Essential:** Beyond jump starting—charge your devices and light up the night with a 300-lumen SOS flashlight.

## Overview

The LOKITHOR J400 is a compact, high-capacity portable jump starter delivering 2000A peak current to start up to 8.0L gas and 6.0L diesel engines. Featuring ConnectMax intelligent technology, a large smart display, and advanced safety protections, it offers reliable, safe, and fast jump starts. With a 6400mAh lithium polymer battery, it also doubles as a power bank with fast USB charging and a 300-lumen LED flashlight, making it an indispensable emergency tool for drivers who demand convenience, safety, and performance.

## Description

Buy LOKITHOR J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines | 12V 2000A Lithium Car Battery Jump Pack, Jump Box, Jumper Cables with ConnectMax Tech | Smart Digital Display | 300-lumen LED: Jump Starters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: 5 Stars – Reliable, powerful lifesaver for dead batteries! - I picked up the jump pack just in case my truck ever died, and guess what happened after 2 months? it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. I picked up the LOKITHOR J400 Portable Jump Starter after my truck battery died in a parking lot during cold weather, and it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. For the price (especially with any deals), this is way better value than calling a tow truck or dealing with sketchy jumper cables. Highly recommend for anyone who drives regularly or travels – peace of mind in a small package. Five stars, no regrets!
Review: Great portable battery jump unit - I love this battery charger! It works perfectly and is small and compact. Keeping it charged every few months gives me piece of mind if I ever get stuck out and about. It’s difficult as a woman to wait for a stranger to assist with car issues alone. It charge really quick and started my car instantly. It works exactly like jumper cables super easy without the hassle of needing another vehicle. It’s also convenient to not need your car in a certain position to use like needing another car as well making it much more version than standard jumping cables. It’s really well made and seems to be built to last.

## Features

- Start Dead Batteries Instantly – Jump start even completely drained batteries with up to 2000A peak current. Supports up to 8.0L gas / 6.0L diesel engines and delivers up to 25 starts per charge for reliable emergency power anytime.
- ConnectMax Technology – Get faster and more reliable starts with intelligent connection detection. The system automatically adjusts output for maximum efficiency, reducing the risk of failed starts.
- Advanced Safety Protection – Built with an intelligent battery management system (BMS) and smart clamps, this jump starter provides multiple layers of protection, including reverse polarity, short circuit, and overcurrent protection, ensuring safer and more reliable operation.
- More Than a Jump Starter – Jump start your car, recharge your devices, and stay visible in the dark. With fast USB charging and a 300-lumen LED flashlight with SOS mode, you're prepared for roadside emergencies anytime.
- Smart Display, Total Control – The large 5.75-inch screen gives you clear, real-time updates on battery status, connection, and alerts—so you always know exactly what’s happening and can jump start with confidence.
- High-Rate Lithium Cells (80C) – Designed for extreme power delivery, the advanced battery cells provide faster energy release for stronger starts compared to conventional jump starters.
- Confidence Guaranteed – Backed by a 12-month warranty and supported by LOKITHOR, every J400 is built to deliver reliable performance with everything included for immediate use.
- Gift of the Year - Designed for Urgency. If you're still agonizing over gift choices, then the J400 is undoubtedly the best option for birthdays, Valentine's Day, Father's Day, Mother's Day, wedding anniversaries, Christmas, and New Year's gifts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CR1B6KX3 |
| Amperage | 2000 A |
| Automotive Fit Type | Universal Fit |
| Battery Capacity | 6400 milliamp_hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Type | Lithium Polymer |
| Best Sellers Rank | #5,514 in Automotive ( See Top 100 in Automotive ) #71 in Jump Starters |
| Brand | LOKITHOR |
| Brand Name | LOKITHOR |
| Compatible with Vehicle Type | ATV, Lawn Mower, Motorcycle, Passenger Car, Motorcycle, ATV, Van, RV, UTV, Truck, Watercraft, Tractor, Scooter, Snowmobile, Tractor, UTV, Watercraft |
| Customer Reviews | 4.6 out of 5 stars 994 Reviews |
| Included Components | J400 Jump Start Battery Pack, Jump Starter Clamp, USB-A to USB-C, User Manual |
| Item Dimensions D x W x H | 3.39"D x 6.89"W x 1.69"H |
| Item Highlight | 12V 2000A Lithium Car Battery Jump Pack, Jump Box, Jumper Cables with ConnectMax Tech | Smart Digital Display | 300-lumen LED |
| Item Type Name | J SERIES |
| Item Weight | 450 g |
| Manufacturer | LOKITHOR |
| Manufacturer Part Number | J400 |
| Manufacturer Warranty Description | 1 year manufacturer |
| Model Number | J400 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Peak Output Current | 2000 A |
| Product Dimensions | 3.39"D x 6.89"W x 1.69"H |
| Specification Met | CE, UL |
| UPC | 198168735701 |
| Unit Count | 1 Count |
| Vehicle Service Type | ATV, Lawn Mower, Motorcycle, Passenger Car, Motorcycle, ATV, Van, RV, UTV, Truck, Watercraft, Tractor, Scooter, Snowmobile, Tractor, UTV, Watercraft Vehicle Service Type ATV, Lawn Mower, Motorcycle, Passenger Car, Motorcycle, ATV, Van, RV, UTV, Truck, Watercraft, Tractor, Scooter, Snowmobile, Tractor, UTV, Watercraft See more |
| Voltage | 12 volts |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Brand:** LOKITHOR
- **Product Dimensions:** 3.39"D x 6.89"W x 1.69"H
- **Voltage:** 12 volts

## Images

![J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines - Image 1](https://m.media-amazon.com/images/I/71FVelRHDYL.jpg)
![J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines - Image 2](https://m.media-amazon.com/images/I/71f-z1jhqZL.jpg)
![J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines - Image 3](https://m.media-amazon.com/images/I/71mpuz7Z4JL.jpg)
![J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines - Image 4](https://m.media-amazon.com/images/I/81b41lxFuNL.jpg)
![J400 Portable Jump Starter for Upto 8.0L Gas & 6.0L Diesel Engines - Image 5](https://m.media-amazon.com/images/I/71t-uwiA78L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5 Stars – Reliable, powerful lifesaver for dead batteries!
*by D***G on June 9, 2026*

I picked up the jump pack just in case my truck ever died, and guess what happened after 2 months? it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. I picked up the LOKITHOR J400 Portable Jump Starter after my truck battery died in a parking lot during cold weather, and it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. For the price (especially with any deals), this is way better value than calling a tow truck or dealing with sketchy jumper cables. Highly recommend for anyone who drives regularly or travels – peace of mind in a small package. Five stars, no regrets!

### ⭐⭐⭐⭐⭐ Great portable battery jump unit
*by K***S on August 6, 2026*

I love this battery charger! It works perfectly and is small and compact. Keeping it charged every few months gives me piece of mind if I ever get stuck out and about. It’s difficult as a woman to wait for a stranger to assist with car issues alone. It charge really quick and started my car instantly. It works exactly like jumper cables super easy without the hassle of needing another vehicle. It’s also convenient to not need your car in a certain position to use like needing another car as well making it much more version than standard jumping cables. It’s really well made and seems to be built to last.

### ⭐⭐⭐⭐⭐ The Only Jump Starter You’ll Ever Need.
*by G***N on May 3, 2026*

I’ve been using the LokiThor J400 for about a month now and I am genuinely blown away. In that short time, I’ve used it 2-3 times on my own 1997 Jeep Wrangler (Dealing with electrical issues.) Ive even helped two strangers get back on the road with dead batteries. This thing is a lifesaver — literally. This unit is barely larger than my hand. I expected something bulky and awkward, but it sits effortlessly in my glove box and weighs almost nothing. You can feel the quality in the weight. The connections are rock solid and the build quality is exceptional. No sketchy clamps, no questionable wiring — everything clicks into place with confidence. It's very straight forward, you plug in the positive & negative clamps and you're good to go. It fired up my Jeep every single time without hesitation. It is also a serious portable power bank. I’ve charged my phone multiple times on a single charge — it has more than enough juice to keep your devices powered up on long trips or during emergencies. Battery life is good. If you want compact size, reliable connectivity, genuine safety features, and ease of use all wrapped into one powerhouse device — this is it. Best purchase I’ve made all year. 10/10 would recommend to anyone who drives a car.

## Frequently Bought Together

- LOKITHOR J400 Jump Starter with ConnectMax Tech, 2000A 12V Battery Jumper Starter Portable, Lithium Jump Box and Jump Pack for Up to 8.0-Liter Gas and 6.0-Liter Diesel Engines, Smart Digital Screen
- LOKITHOR J-Series Storage Bag EVA Protection Case for J400/J401/J401X/J402/J1350 PRO/J2250 PRO/JP400 LOKITHOR Battery Jump Starters
- LOKITHOR JP400 Jump Starter with Air Compressor, 2500A 12V Car Battery Jumper Starter Portable (8.5L Gas/6.5L Diesel) with ConnectMax Tech, 150PSI Tire Inflator, Auto-Shutoff & Dynamic Dwell

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-03*