---
product_id: 320429699
title: "NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines"
brand: "noco"
price: "¥133258"
currency: JPY
in_stock: true
reviews_count: 9
category: "Noco"
url: https://www.desertcart.jp/products/320429699-noco-boost-x-gbx155-4250a-ultrasafe-jump-starter-12v-lithium
store_origin: JP
region: Japan
---

# 4250A peak amps for extreme starts Up to 18 jump starts per full charge 2.7h fast USB-C recharge time NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

**Brand:** noco
**Price:** ¥133258
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your peace of mind — jump, charge, and conquer every start!

## Quick Answers

- **What is this?** NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines by noco
- **How much does it cost?** ¥133258 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/320429699-noco-boost-x-gbx155-4250a-ultrasafe-jump-starter-12v-lithium)

## Best For

- noco enthusiasts

## Why This Product

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

## Key Features

- • **UltraSafe 2.0 Tech:** Spark-proof, reverse polarity protection with enhanced thermal management for worry-free, long-lasting use.
- • **Built-In 500 Lumen LED:** Seven light modes including SOS and strobe—your ultimate roadside emergency companion.
- • **Multi-Device Power Bank:** 60W USB-C PD dual-direction port charges your phone, laptop, or tablet—stay connected on the go.
- • **Turbo Recharge in Minutes:** Get a jump start-ready charge in just 5 minutes or full recharge in 2.7 hours via USB-C PD—never wait to power up.
- • **Extreme Power, Zero Compromise:** 4250 amps to jump gas engines up to 10L & diesel up to 8L—unmatched muscle for your ride.

## Overview

The NOCO Boost X GBX155 is a premium 12V lithium jump starter delivering 4250 amps to start large gas and diesel engines with ease. Featuring UltraSafe 2.0 technology, it offers advanced spark-proof and reverse polarity protection plus thermal efficiency for safe, reliable use. Its high-voltage design supports up to 18 jump starts per charge, recharges rapidly in 2.7 hours via USB-C Power Delivery, and doubles as a 60W portable power bank. Equipped with a 500-lumen multi-mode LED flashlight, this rugged, portable jump box is engineered in the USA and built to keep you moving no matter the conditions.

## Description

The GBX155 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 4,250 amps to start gas engines up to 10.0 liters and diesel engines up to 8.0 liters. Featuring our upgraded UltraSafe 2.0 technology, it offers spark-proof connections and reverse polarity protection, now with enhanced thermal efficiency and power management for even greater safety and battery life. Designed with a high-voltage output system, the GBX155 includes an integrated 60-second timer to conserve energy—delivering up to 18 jump starts per charge with maximum power on every start. Even if completely depleted, it can gain enough power for a jump start in just 5 minutes or fully recharge in only 2.7 hours via USB-C Power Delivery. A 60-watt USB-C port provides both input and output, turning Boost X into a high-performance power bank for fast charging phones, tablets, laptops, and other USB-C devices. A precision-engineered 500-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX155 jump starter comes complete with heavy-duty jumper clamps, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year limited warranty and proudly engineered in the USA. Whether you’re looking for a car jump starter, battery jump box, jumper pack, power pack jump starter, or a reliable jump starter battery pack to keep in your glovebox, the GBX155 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.

Review: It just works! Don't buy an El Cheapo "Gibberish Brand", buy this one! You WILL NOT be disappointed! - So, you're looking at this because you have a 1-ton truck? Dual batteries? And I'm guessing in the cold your engine simply just doesn't want to start, right? Or perhaps you've got a vehicle that loses battery charge after a couple days of being unused? Or perhaps you have a habit of accidentally leaving the dome light on all night? Or perhaps your battery just isn't up to snuff anymore and you just want to make sure it starts, regardless? And now you're looking at that price of $370 (at the time of this review) and thinking to yourself "There's got to be a cheaper one that will get the job done, right?" Short answer? Possibly. Shorter answer? DON'T!  It absolutely works. It delivers the power it advertises. It's worth the money. If you want a boost pack that just works and you can afford it? Then just buy this one! You will NOT be disappointed! DO NOT buy the cheaper "Gibberish Brand" packs. If you do, you WILL be disappointed and they WILL leave you stranded. Yep. it really is that simple! My ONLY regret in buying this jump pack is that I didn't buy it sooner! I just couldn't justify the price tag... If I had known just how good it is, I'd have made room in the budget for it a lot sooner than I did!  I have a 1998 GMC K3500 with a dual battery setup. I do NOT have a block heater (yet). At zero degrees (F), it turns over but REFUSES to catch. After turning the engine over for roughly 10 seconds on a fresh full charge, it just quits. No go juice! And if you've done like I have by adding a manual override for your glow plugs because you upgraded them and know they can handle the extended burn time? It's still not enough. The batteries are just too small to be viable in the winter on the Canadian border where I am. Now that you have the backstory, I too was put off by the price. I watched a LOT of videos comparing various jump packs and every single one of them rated THIS pack, the NOCO Boost X GBX155 as the highest in every single list. I really had a tough time shelling out the cash for this, but now that I have it? I'll NEVER give it up! This thing is super easy to use. Charge it up when you get it. Believe it or not, for as heavy and bulky as this jump pack is, it charges FAST. From depleted to full charge in under 3 hours! That's AMAZING! If you have a dual battery diesel truck like me? You're going to be absolutely ASTONISHED at just how much power this thing packs. Its punch is nothing short of INCREDIBLE! When you hook it up to your battery, make sure you connect it to the battery that has the positive lead straight to the starter. While it'll work, connecting it to the accessory battery WILL cause a loss of power to the starter simply because of the cable run length from the accessory battery over to the primary start battery and then to the starter. Really, the only thing I can say I'm not too fond of is where they put the button to turn on the flashlight function. That darned thing is RIGHT where I grab it to pick it up and every time I pick it up I inadvertently press the flashlight button and let me tell you, it's pretty darned bright! This thing will also let you override the error condition on a FULLY depleted battery to allow you to jump the vehicle regardless of your battery voltage. Another really nice feature is the fact that it also has two USB-A ports to charge another device with, like your phone. The USB-C charging port can also be used to charge another USB-C device, too! The charging port goes two ways! The real reason you're looking at this specific jump pack though, is to find out if it lives up to its promises. I can tell you that yes, it absolutely does! Keep this in your vehicle and you'll end up being a hero to someone if they need a jump, too. No more need to carry long, heavy jumper cables if you've got this thing! You can rest easy if you have this jump pack. If you get into a spot of trouble because you left your headlights or marker lights or dome light on and ran your battery down while you were at the theater watching a movie or something? This will absolutely get you out of a jam. My truck is nearly 30 years old. I upgraded the starter to a planetary reduction gear starter. In the summer months, the dual batteries spin the engine decently with the specific starter I upgraded to. However, this jump pack? At ZERO degrees Fahrenheit, this jump pack cranks the engine over even faster than the dual batteries in the truck do! Because of where I am and my current vehicle situation, I'm having to jump the truck virtually every time I want to go somewhere. The truck's batteries just aren't enough and there's really no easy way to install bigger, more capable batteries under the hood. But, with this jump pack? I don't have to worry about whether the truck will start or not. It's virtually guaranteed it will. Without this jump pack, I'd be stuck most of the time in winter! You could call it peace of mind and you'd be accurate! If you're on the fence between this and a cheap one that's half the price or even a quarter of the price? Do yourself a favor! Forget the cheap ones, they don't stand a chance against this one. If you've got a family and you NEED your vehicle to just WORK regardless of having left that dome light on all night? You won't be disappointed if you have the NOCO Boost X GBX155. It's worth every penny!
Review: Works every time and lasts a long time. - This thing is a beast! In the best way. I always have to put it in full override mode to start completely dead vehicles but it always does the job. Mostly working on 70s to 90s V8s. Would start smaller rides without even blinking. I get about 8 to 10 starts on these completely dead vehicles and it charges pretty quick too but I just leave it plugged in over night when needed. It has sat for months under the seat of my truck and was still ready to work when needed. These are well worth the money and so much better than the big bulky units that die if not constantly charged and only jump 2 or 3 times before dieing. Just get one, you'll be happy you did.

## Features

- X FOR EXTREME — A new class of lithium jump starters. Rated at 4,250 amps for powerful starts on gas engines up to 10.0L and diesel engines up to 8.0L - built for extreme performance.
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with enhanced thermal efficiency and power management for even safer operation and extended battery life.
- TURBO CHARGEABLE — Recharges in just 2.7 hours via USB-C Power Delivery, or gain enough power for a jump start in just 5 minutes - even from a completely depleted battery.
- 60-SECOND TIMER — Integrated 60-second timer conserves power from its high-voltage design - delivering up to 18 jump starts per charge with extreme energy at every start.
- CHARGE EVERYTHING — 60-watt USB-C Power Delivery lets you charge phones, tablets, laptops, and more. Dual-direction charging turns Boost X into a high-output portable power bank.
- INTEGRATED LED FLASHLIGHT — Precision-engineered 500-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
- WHAT’S IN THE BOX — GBX155 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08WZFPXFM |
| Amperage | 4250 Amps |
| Automotive Fit Type | Universal Fit |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #883 in Automotive ( See Top 100 in Automotive ) #22 in Jump Starters |
| Brand | NOCO |
| Bulb Type | LED |
| Customer Reviews | 4.2 4.2 out of 5 stars (6,607) |
| Date First Available | February 19, 2021 |
| Exterior | Machined |
| Global Trade Identification Number | 00046221200096 |
| Item Weight | 7.01 pounds |
| Item model number | GBX155 |
| Manufacturer | NOCO |
| Manufacturer Part Number | GBX155 |
| Model | GBX155 |
| OEM Part Number | GBX155 |
| Peak Output Current | 4250 Amps |
| Position | Unknown |
| Product Dimensions | 8.18"D x 4.84"W x 13.51"H |
| Special Features | 4250A 12V Portable Lithium Car Battery Jump Starter Power Pack, 500 Lumen LED Flashlight with Multiple Modes, including SOS., 60-Watt USB-C Power Delivery Technology, Portable Power Bank for USB Devices, Reverse Polarity and Spark-Proof Protection |
| Specification Met | energy |
| UPC | 046221200096 |

## Product Details

- **Battery Cell Composition:** Lithium
- **Brand:** NOCO
- **Product Dimensions:** 8.18"D x 4.84"W x 13.51"H
- **Vehicle Service Type:** ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft
- **Voltage:** 12 Volts

## Images

![NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines - Image 1](https://m.media-amazon.com/images/I/71E677Vc2rS.jpg)

## Questions & Answers

**Q: Can i charge a noco boost x gbx155 jump starter with a noco xgc4 56-watt xgc power adapter?**
A: I own both the NOCO GBX155 jump starter, as well as the XGC4 56 watt fast charge power adapter. I can absolutely confirm that this 56 watt power adapter is not compatible with the GBX155. The charger does not have the proper connection. I confirmed with NOCO that the 2 devices are not compatible. It is absolutely inexcusable that NOCO does not have a method of fast charging the GBX155 using ordinary house current. The output of the XGC4 56 watt device is a male cylindrical output (precise size unknown to me), and the input of the GBX155 is a USB-C, I believe. I don't know if some sort of adapter is available, and if it is, if there is some sort of other electrical incompatibility issue that might exist. I think that the mfg. says that the included USB cable is not suitable for fast charging- I think maybe a special higher capacity USB cable needs to be purchased, but I am not sure on this point. Using the included cable, plus an Iphone charger (I think a 12 watt - output = 5 volts at 2400 mA), a full charge (solid, unblinking green light) takes a little over 16 hours when being charged for the first time. The GBX155 did arrive with a partial 2 yellow light charge, so it may take longer to charge when almost completely drained. I think it may be able to be fast charged using the included car cigarette lighter adapter, but I am not sure of this point. You would probably need to do this while the car engine is running (i.e. on a long trip)  so that the car battery was not excessively drained. But I am not sure of this point. As of now 12/30/21, (had for 1 day), I have not actually used this for anything, so I can't report on its functionality. I plan on using it for dead car batteries, and perhaps dead cell phone batteries (in an emergency situation etc) Once again, it is absolutely inexcusable that NOCO does not have available a method to fast charge this battery booster. It is even worse that Amazon still has these 2 items- GBX155 and XGC4, listed as 'Being frequently bought together'. They are definitely not compatible. I was foolishly misled by this, as apparently were other Amazon customers. SHAME on both Amazon and NOCO! The GBX155 does appear to be of excellent quality, and well made.

**Q: What is the Mah rating on this device?**
A: The user manual rates it at 99 watt hours and it supports a variable output voltage of between 5 and 20 watts. So, running at 5 volts, your mAH would be 99Wh / 5V = 19.8 Ah * 1000 = 19,800 mAH. At 12 volts, you would have 99 / 12 * 1000 = 8,250 mAH. At 20 volts, 99 / 20 * 1000 = 4,950 mAH. From what I've seen, USB power banks usually use the 5V standard for calculating mAH, so for comparison purposes, this is probably the one you'll want to use. Hope this helps!

**Q: What is the correct Noco email for customer support?**
A: support@no.co  (That is indeed supposed to read ".co", NOT ".com")

**Q: The boost led does not come on after i plugged it into the battery? any help would be appreciated it**
A: Does any other lights flash?  I had a short in the alternator and would cause the exclamation icon next to the battery gauge to flash and the boost LED would not come on.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It just works! Don't buy an El Cheapo "Gibberish Brand", buy this one! You WILL NOT be disappointed!
*by F***S on January 1, 2026*

So, you're looking at this because you have a 1-ton truck? Dual batteries? And I'm guessing in the cold your engine simply just doesn't want to start, right? Or perhaps you've got a vehicle that loses battery charge after a couple days of being unused? Or perhaps you have a habit of accidentally leaving the dome light on all night? Or perhaps your battery just isn't up to snuff anymore and you just want to make sure it starts, regardless? And now you're looking at that price of $370 (at the time of this review) and thinking to yourself "There's got to be a cheaper one that will get the job done, right?" Short answer? Possibly. Shorter answer? DON'T! <] TLDR [> It absolutely works. It delivers the power it advertises. It's worth the money. If you want a boost pack that just works and you can afford it? Then just buy this one! You will NOT be disappointed! DO NOT buy the cheaper "Gibberish Brand" packs. If you do, you WILL be disappointed and they WILL leave you stranded. Yep. it really is that simple! My ONLY regret in buying this jump pack is that I didn't buy it sooner! I just couldn't justify the price tag... If I had known just how good it is, I'd have made room in the budget for it a lot sooner than I did! <] /TLDR [> I have a 1998 GMC K3500 with a dual battery setup. I do NOT have a block heater (yet). At zero degrees (F), it turns over but REFUSES to catch. After turning the engine over for roughly 10 seconds on a fresh full charge, it just quits. No go juice! And if you've done like I have by adding a manual override for your glow plugs because you upgraded them and know they can handle the extended burn time? It's still not enough. The batteries are just too small to be viable in the winter on the Canadian border where I am. Now that you have the backstory, I too was put off by the price. I watched a LOT of videos comparing various jump packs and every single one of them rated THIS pack, the NOCO Boost X GBX155 as the highest in every single list. I really had a tough time shelling out the cash for this, but now that I have it? I'll NEVER give it up! This thing is super easy to use. Charge it up when you get it. Believe it or not, for as heavy and bulky as this jump pack is, it charges FAST. From depleted to full charge in under 3 hours! That's AMAZING! If you have a dual battery diesel truck like me? You're going to be absolutely ASTONISHED at just how much power this thing packs. Its punch is nothing short of INCREDIBLE! When you hook it up to your battery, make sure you connect it to the battery that has the positive lead straight to the starter. While it'll work, connecting it to the accessory battery WILL cause a loss of power to the starter simply because of the cable run length from the accessory battery over to the primary start battery and then to the starter. Really, the only thing I can say I'm not too fond of is where they put the button to turn on the flashlight function. That darned thing is RIGHT where I grab it to pick it up and every time I pick it up I inadvertently press the flashlight button and let me tell you, it's pretty darned bright! This thing will also let you override the error condition on a FULLY depleted battery to allow you to jump the vehicle regardless of your battery voltage. Another really nice feature is the fact that it also has two USB-A ports to charge another device with, like your phone. The USB-C charging port can also be used to charge another USB-C device, too! The charging port goes two ways! The real reason you're looking at this specific jump pack though, is to find out if it lives up to its promises. I can tell you that yes, it absolutely does! Keep this in your vehicle and you'll end up being a hero to someone if they need a jump, too. No more need to carry long, heavy jumper cables if you've got this thing! You can rest easy if you have this jump pack. If you get into a spot of trouble because you left your headlights or marker lights or dome light on and ran your battery down while you were at the theater watching a movie or something? This will absolutely get you out of a jam. My truck is nearly 30 years old. I upgraded the starter to a planetary reduction gear starter. In the summer months, the dual batteries spin the engine decently with the specific starter I upgraded to. However, this jump pack? At ZERO degrees Fahrenheit, this jump pack cranks the engine over even faster than the dual batteries in the truck do! Because of where I am and my current vehicle situation, I'm having to jump the truck virtually every time I want to go somewhere. The truck's batteries just aren't enough and there's really no easy way to install bigger, more capable batteries under the hood. But, with this jump pack? I don't have to worry about whether the truck will start or not. It's virtually guaranteed it will. Without this jump pack, I'd be stuck most of the time in winter! You could call it peace of mind and you'd be accurate! If you're on the fence between this and a cheap one that's half the price or even a quarter of the price? Do yourself a favor! Forget the cheap ones, they don't stand a chance against this one. If you've got a family and you NEED your vehicle to just WORK regardless of having left that dome light on all night? You won't be disappointed if you have the NOCO Boost X GBX155. It's worth every penny!

### ⭐⭐⭐⭐⭐ Works every time and lasts a long time.
*by A***R on February 1, 2026*

This thing is a beast! In the best way. I always have to put it in full override mode to start completely dead vehicles but it always does the job. Mostly working on 70s to 90s V8s. Would start smaller rides without even blinking. I get about 8 to 10 starts on these completely dead vehicles and it charges pretty quick too but I just leave it plugged in over night when needed. It has sat for months under the seat of my truck and was still ready to work when needed. These are well worth the money and so much better than the big bulky units that die if not constantly charged and only jump 2 or 3 times before dieing. Just get one, you'll be happy you did.

### ⭐⭐⭐⭐⭐ NOCO GBX155 "Don't leave home with out it"
*by A***I on February 9, 2026*

I purchased this truly awesome Noco jumpbox probably 4 years ago from Amazon, i have had NO problems, ZERO, ZILCH, NATA, it has been a top tear security blanket for me ,if my Chevy Silverado Z71 battery needs a jump ,no problem, if my chevy battery is 100% dead ($15 core value) at best , if i don't even have a battery this power box will start my motor with true assertiveness. My only complaint would be im to nice I've used it 9 times out of 10 for other people, i should have been charging people $$ but i didn't, so now the word on the street is Andrew will take care of you, after jumping say 5 cars u should recharge it you don't want to have it unprepared months later, easy to use fail safe if u cross wires. Andrew Mongelli

## Frequently Bought Together

- NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.5L Gas and 4.0L Diesel Engines
- NOCO GBC104 Boost X EVA Protection Case for GBX155 UltraSafe Lithium Jump Starters
- TAIFU 65W USB C NOCO GBC011 Power Adapter Battery Charger for NOCO Boost X GBX45 1250A GBX55 GBX75 1750A GBX75 2500A GBX155 4250A & Boost Air AX65 UltraSafe Portable Jump Starter Power Supply Cord

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*