GOOLOO GP4000 Jump Starter - 4000A 12V Car Battery Jumper Starter Portable

The GOOLOO GP4000 Jump Starter is a heavy-duty portable power pack engineered to revive dead 12V vehicle batteries quickly. Delivering 4000 amps of peak current, it handles everything from everyday cars and motorcycles to tractors, pickup trucks, RVs, and boats. It is built for drivers who want peace of mind against dead batteries without waiting for roadside assistance or flagging down another car for a jump.

Under the hood, the unit can start all gasoline engines and up to 10.0L diesel engines within seconds. If a battery is completely drained, a dedicated boost button overrides low voltage to forcefully restart the vehicle. The unit uses durable all-metal clamps and ten types of built-in electrical protections to prevent sparks and damage from improper connections. An advanced internal chip maintains startup reliability across severe temperatures ranging from -4°F up to 140°F.

Beyond vehicle emergencies, the device doubles as a high-capacity portable power bank. It features dual USB output ports, including a fast-charging connection, and a 5V/3A USB Type-C port to keep phones, tablets, GPS units, and cameras running. The housing uses hardened plastic and rubber corners to survive drops, while a built-in flashlight helps you navigate dark roadside situations.

A few practical limitations exist. The kit includes a USB to Type-C cable and a cigarette lighter socket adapter, but it does not come with a dedicated AC wall charging block. To keep the battery in working condition when sitting idle in a trunk or garage, it requires a top-up charge every 2 to 3 months, and it only works on 12V electrical systems.

Verdict: The GOOLOO GP4000 is an excellent choice for owners of large trucks, RVs, or daily drivers needing reliable cold-weather starting power. Its versatile charging ports, durable metal clamps, and safety protections make it a dependable emergency tool for any road trip.

• Peak Current: 4000A
• Voltage Compatibility: 12V
• Engine Capacity: All gas engines, up to 10.0L diesel
• Operating Temperature: -4°F (-20°C) to 140°F (60°C)
• Type-C Port: 5V/3A
• Body Materials: Hardened plastic and rubber corners
• Included Accessories: Smart jumper cable, USB to Type-C cable, cigarette lighter adapter, EVA case
• Warranty: 18 months

A great fit if you:

• Drive large diesel trucks, RVs, tractors, or cargo vans with engines up to 10.0L.
• Live in areas with freezing winters down to -4°F or hot summers up to 140°F.
• Want an emergency power source to charge portable electronics and phones on the road.
• Need a self-contained jump starter that works without needing another vehicle.

Consider something else if you:

• Need to jump-start heavy machinery or commercial vehicles with 24V electrical systems.
• Prefer a package that includes a dedicated wall charger plug in the box.

What should I do if my vehicle battery is completely dead?
If the battery voltage is extremely low, connect the clamps firmly to clean terminals and press the BOOST button to forcefully start the engine.

Does this jump starter come with a wall charger?
No. The package includes a USB to Type-C cable and a cigarette lighter socket adapter, but a wall charging block is not included.

How often do I need to recharge the jump starter if it is not in use?
If the jump starter sits idle for an extended period, it is recommended to charge it every 2 to 3 months to keep it in optimal condition.

What types of vehicles can the GP4000 start?
It is compatible with 12V vehicles including motorcycles, cars, pickup trucks, RVs, tractors, cargo vans, ATVs, snowmobiles, and yachts, supporting all gas engines and up to 10.0L diesel engines.