GOOLOO GP4000 4000A 12V Portable Jump Starter — 10.0L Engine Capable, Power Bank & Fast USB-C Charging

The GOOLOO GP4000 is a compact 4000A 12V portable jump starter that quickly revives dead batteries for gasoline and diesel engines up to 10.0L while also acting as a high-capacity power bank.

If you need a dependable roadside power solution, the GP4000 combines a high-peak cranking current, a large internal battery, and safety-first design features in a rugged, travel-ready package. It’s built to start cars, trucks, ATVs and even yachts, and includes multi-port charging, reinforced metal clamps, an LED flashlight, and temperature-tolerant electronics for year-round reliability.

How quickly will the GP4000 start my vehicle?

The GP4000 delivers a 4000 amp peak boost and uses JUMPCORE technology to provide powerful, immediate starting assistance. In most cases it will restart a drained 12V battery in seconds, including large gasoline and diesel engines up to 10.0L.

• 4000A peak current designed for fast cranking
• Capable of starting most vehicles, motorcycles, ATVs, and boats
• Works on gasoline and diesel engines up to 10.0L
• Full charge can deliver over 60 jump-starts depending on vehicle size

What safety features protect me and my vehicle?

GOOLOO built the GP4000 with SUPERSAFE technology providing ten types of built-in protection to prevent sparks, reverse polarity issues, and misuse. The smart jumper cables include durable metal clamps and an intelligent control system that reduces risk during jump-starting.

• Reverse polarity, short-circuit, and overcurrent protections
• Durable all-metal clamps to resist long-term wear
• LED status indicators to confirm proper connection and power
• Non-slip rubber corners and hardened plastic housing for drop resistance

Can I charge phones and other devices with this jump starter?

Yes. The GP4000 doubles as a large-capacity portable charger with dual USB outputs (one fast-charging) plus a USB-C input/output (5V/3A). It can recharge phones, tablets, cameras, GPS units, and other accessories when you’re away from mains power.

• Dual USB ports with one fast-charge capable output
• USB-C port for both charging and recharging the unit (5V/3A)
• Compact form factor for easy storage in glove box or trunk
• Can power devices during roadside emergencies or outdoor trips

How durable and weather-ready is the GP4000?

The GP4000 is engineered to tolerate a wide temperature range from -4°F (-20°C) to 140°F (60°C) thanks to an advanced smart chip and robust construction. Rubberized corners and a rugged housing help protect internal components from drops and rough handling.

• Operates reliably in extreme cold and heat
• Hardened plastic body with impact-resistant rubber corners
• Built-in flashlight for nighttime roadside assistance
• Includes EVA storage case to organize cables and accessories

Who is this for? The GOOLOO GP4000 is ideal for drivers who value rapid, reliable starting power and multi-purpose charging: regular commuters, long-haul truckers, RV and boat owners, off-road enthusiasts, and anyone who wants a compact emergency power system. It's also a good fit for households that want an easy-to-use booster with strong safety features and enough capacity to charge personal devices while on the go.

In the box: GOOLOO GP4000 jump starter, smart jumper cable, USB–C cable, cigarette lighter adapter, EVA storage case, 18 months warranty and lifetime tech support. Tip: recharge the unit every 2–3 months if stored long-term; always confirm the jump starter has sufficient charge and that your vehicle is a compatible 12V system before attempting a jump-start.