--- product_id: 320429699 title: "Boost GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster" brand: "noco" price: "€ 852.88" currency: EUR in_stock: true category: "Noco" url: https://www.desertcart.hr/products/320429699-boost-gbx155-4250a-ultrasafe-jump-starter-12v-lithium-battery-booster store_origin: HR region: Croatia --- # 4250A peak amps for extreme starts 6750mAh lithium battery capacity 60W USB-C Power Delivery fast charge Boost GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster **Brand:** noco **Price:** € 852.88 **Availability:** ✅ In Stock ## Summary > 🚀 Power your drive, own the road—never get stranded again! ## Quick Answers - **What is this?** Boost GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster by noco - **How much does it cost?** € 852.88 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/320429699-boost-gbx155-4250a-ultrasafe-jump-starter-12v-lithium-battery-booster) ## 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 & thermal management for worry-free, long-lasting performance. - • **Multi-Device Power Bank:** 60W USB-C output plus dual USB-A ports keep your phone, tablet, and laptop charged on the go. - • **Built for Real-World Hustle:** Up to 18 jump starts per charge with integrated 60-second timer and a 500-lumen LED flashlight with 7 modes. - • **Turbo Recharge in 2.7 Hours:** USB-C PD fast charging means less downtime and more readiness—get a jump start in just 5 minutes. - • **Extreme Power, Zero Compromise:** 4250 amps to jump gas engines up to 10L & diesel up to 8L—start with confidence every time. ## Overview The NOCO Boost X GBX155 is a professional-grade 12V lithium jump starter delivering 4250 amps peak current, capable of starting large gas (up to 10L) and diesel (up to 8L) engines. Featuring UltraSafe 2.0 technology for enhanced safety, it recharges rapidly via USB-C Power Delivery in 2.7 hours and supports up to 18 jump starts per charge. Doubles as a 60W USB-C power bank with dual USB-A ports and includes a 500-lumen multi-mode LED flashlight. Compact, durable, and engineered in the USA, it’s the ultimate portable power solution for demanding professionals and adventurers alike. ## 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. ## 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 A | | Automotive Fit Type | Universal Fit | | Battery Capacity | 6750 milliamp_hours | | Battery Type | Lithium | | Best Sellers Rank | #209 in Automotive ( See Top 100 in Automotive ) #9 in Jump Starters | | Brand Name | NOCO | | Compatible with Vehicle Type | ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft | | Customer Reviews | 4.2 4.2 out of 5 stars (7,311) | | Global Trade Identification Number | 00046221200096 | | Included Components | 1-Year Warranty, 12V USB-C Fast Charger, GBX155 UltraSafe Portable Lithium Car Battery Booster Jump Starter Pack, Heavy-Duty Jumper Cable Clamps, Microfiber Storage Bag, Power Bank with 60W USB-C Power Delivery, USB-C Charging Cable | | Item Dimensions D x W x H | 8.18"D x 4.84"W x 13.51"H | | Item Type Name | Jump Starter | | Item Weight | 7 pounds | | Manufacturer | NOCO | | Manufacturer Part Number | GBX155 | | Manufacturer Warranty Description | 1 Year Limited | | Model Number | GBX155 | | Number of Items | 1 | | Peak Output Current | 4250 A | | Specification Met | energy | | UPC | 046221200096 | | Unit Count | 1 Count | | Voltage | 12 volts | ## 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 ![Boost GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster - Image 1](https://m.media-amazon.com/images/I/71E677Vc2rS.jpg) ## Available Options This product comes in different **Size** options. ## 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. ## 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 --- ## 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.hr/products/320429699-boost-gbx155-4250a-ultrasafe-jump-starter-12v-lithium-battery-booster](https://www.desertcart.hr/products/320429699-boost-gbx155-4250a-ultrasafe-jump-starter-12v-lithium-battery-booster) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-10-14*