--- product_id: 464849754 title: "MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines" brand: "maxtools" price: "¥53504" currency: JPY in_stock: true category: "Maxtools" url: https://www.desertcart.jp/products/464849754-maxtools-jsl400-uk-2400a-12v-ultrasafe-portable-lithium-jump-starter store_origin: JP region: Japan --- # 2400A peak power High-capacity lithium battery Built-in LED work light MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines **Brand:** maxtools **Price:** ¥53504 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your ride and your life—never get stranded again! ## Quick Answers - **What is this?** MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines by maxtools - **How much does it cost?** ¥53504 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/464849754-maxtools-jsl400-uk-2400a-12v-ultrasafe-portable-lithium-jump-starter) ## Best For - maxtools enthusiasts ## Why This Product - Trusted maxtools brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched 2400A Peak Power:** Instantly jump-start petrol engines up to 7.0L and diesel engines up to 4.5L with professional-grade amperage. - • **UltraSafe & Portable Design:** Compact, lightweight 1.25kg unit with intuitive safety features to protect you and your vehicle. - • **Long-Lasting Lithium Battery:** Multiple jump starts on a single charge keep you ready for any roadside emergency without constant recharging. - • **Multi-Functional USB Powerbank:** Charge your smartphone or tablet on the go—stay connected even when your car battery fails. - • **LED Work Light for Nighttime Rescue:** Illuminate dark engine bays and avoid hazards with the integrated bright LED torch. ## Overview The MAXTOOLS JSL400-UK is a robust 2400A 12V lithium jump starter designed for petrol engines up to 7.0L and diesel engines up to 4.5L. Combining a high-capacity battery with a USB charging port and built-in LED light, it offers a versatile, portable solution for emergency vehicle starts and mobile device charging. Lightweight and safety-focused, it’s engineered for professionals and everyday drivers who demand reliability and convenience on the road. ## Description MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines : desertcart.co.uk: Automotive ## Features - Extremely powerful semi-professional 12 V jump starter for any petrol or diesel car and a variety of commercial vehicles - The powerful lithium battery has a large capacity to start the vehicle many times before charging - With practical LED light to illuminate work area, to avoid dangerous short circuits in the dark - A USB charging port is also available for charging mobile phone or iPad ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B6CPJL5V | | Amperage | 2400 Amps | | Best Sellers Rank | 67,888 in Automotive ( See Top 100 in Automotive ) 246 in Car Battery Jump Starters | | Brand Name | MAXTOOLS | | Compatible with Vehicle Type | Passenger Car | | Country Of Origin | China | | Customer Reviews | 2.9 2.9 out of 5 stars (6) | | Included Components | Charger230V UK plug, Charger 12V , Bag, User manual | | Item Type Name | Car Jump Starter, Car Battery Starter, 12 V, Petrol and Diesel Engine, Battery Booster, LED Torch and USB | | Item Weight | 1250 Grams | | Manufacturer | MAXTOOLS | | Manufacturer Part Number | JSL400-UK | | Manufacturer Warranty Description | 2 year manufacturer | | Model Number | JSL400-UK | | Number of Items | 1 | | Peak Output Current | 2400 Amps | | Unit Count | 1.0 count | | Voltage | 12 Volts | | battery-cell-composition | Lithium | ## Product Details - **Battery cell composition:** Lithium - **Brand:** MAXTOOLS - **Item weight:** 1250 Grams - **Vehicle service type:** Passenger Car - **Voltage:** 12 Volts ## Images ![MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines - Image 1](https://m.media-amazon.com/images/I/71kJjBQX0PL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Can you use on stop start batteries** A: Check your manual, it is not advised for many stop/start vehicles! **Q: It comes supplied with a double ended cigarette lighter plug to plug. How is that supposed to be used? To charge the car or the pack?** A: No ...it’s intended for use for any accessory you have such as a electric tyre inflator pump or an external light and can be used to charge your mobile phone when you’re away from the house and car ..and many other uses. **Q: Can start 4lt petrol?** A: Yes - I’ve a 4.2 V8 petrol XK , never a problem ….unless you’ve a completely dead battery then leave unit connected for a few minutes before turning the key **Q: Dimensions of the JS500 model by itself. I can only see package dimensions.** A: Approx dimensions Height 37cm Width 30.5cm Depth 12.5cm. Only minor drawback is that’s it’s quite heavy! ## Frequently Bought Together - MAXTOOLS JSL400-UK 2400A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB Powerbank, and Jump Leads for up to 7.0 Liter Petrol and 4.5 Liter Diesel Engines - Heat Pads for Back Pain Relief, Aisutha Soft Heat Pad with Auto Shut Off and 6 Heat Level Settings, Detachable Heating Pad with Zipper Hook and Loop Fastener, Machine Washable, 12" x 48" --- ## 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.jp/products/464849754-maxtools-jsl400-uk-2400a-12v-ultrasafe-portable-lithium-jump-starter](https://www.desertcart.jp/products/464849754-maxtools-jsl400-uk-2400a-12v-ultrasafe-portable-lithium-jump-starter) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-08*