Customers consistently note the product's effective overall performance, praising its portability and fast charging speed. Many appreciate the easy-to-read display, included accessories like a carrying case, and its quick jump-starting capabilities. The built-in flashlight and good battery life are also highlighted. However, some customers find its size to be a little on the larger side.
We’ll try to get your question answered within 24 hours by a Best Buy customer or brand representative.
Equipped with a powerful 24000mAh battery, the RJ4000 jump starter quickly revives 12V vehicles including cars, trucks, boats, and more, supporting gasoline and diesel engines up to 10 liters.
The clear LCD screen shows real-time status indicators, making it easy to monitor battery level and operational status at a glance.
Features a 65W USB-C in/out port and a QC3.0 USB-A port. Fully recharges in just 1.3 hours and powers devices such as phones, laptops, and tablets—perfect for travel and camping.
Start vehicles in low-voltage conditions with one touch. Built-in LED flashlight includes SOS, strobe, and steady light modes for emergencies.
Operates from -4°F to 140°F, IP64 water-resistant and dustproof. Certified to FCC, CE, ROHS, and UN38.3 safety standards. Includes 12-month warranty and responsive customer support.
Learn more >