Will it start a large diesel truck?

Gooloo rates the GP4000 for all gasoline engines and diesel engines up to 10.0L, so it covers most pickups, cargo vans and RVs. Very cold engines and badly degraded batteries are the hardest cases.

What does the BOOST button do?

It forces a jump when the battery voltage is too low for the normal start sequence. Press BOOST, then attempt the start as directed.

Can I charge my phone with it?

Yes. It has two USB outputs, one with fast charging, plus a USB-C port for recharging the pack itself.

Does it work on motorcycles and ATVs?

Yes, it is built for 12V vehicles including motorcycles, ATVs, snowmobiles and boats, as well as cars and trucks.

How often should I recharge it?

Recharge it every few months and after each use so it holds enough charge for a jump. A depleted pack will not start an engine.

Is it too big for a small car?

It is larger and heavier than 1000–2000A packs, but it still fits in a trunk or under a seat. For a compact gasoline car, a smaller pack would do the job.

Where is the GP4000 SuperSafe 4000A Jump Starter cheapest?

At Arga Shorea Nest, for $38.40, 68% under what the other stores charge, as of our latest check.

Where can I buy the GP4000 SuperSafe 4000A Jump Starter?

10 stores we checked sell it, including Motoflow, Arga Shorea Nest, Amazon, eBay, Best Buy.

Gooloo

GP4000 SuperSafe 4000A Jump Starter

Best price now

$38.40at Arga Shorea NestChecked 6 h ago

68% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when.

Visit Arga Shorea Nest

What reviewers say

Owners of large diesel pickups and RVs report the GP4000 starts engines that smaller packs fail on, and the BOOST button rescues batteries left flat in cold weather. Complaints center on its size and weight and on the need to top it up between uses.

What people mention

Starting powerPraisedOwners say it cranks large diesel and gasoline engines that weaker packs fail on.
BOOST functionPraisedUsers report the BOOST button revives batteries too flat for a normal jump.
Size and weightCriticisedSeveral owners find it bulky and heavy compared with compact jump starters.
USB chargingPraisedThe USB ports are used to charge phones and tablets on trips.
MaintenanceMixedOwners note it must be recharged regularly to be ready when needed.

About the GP4000 SuperSafe 4000A Jump Starter

The Gooloo GP4000 is a portable 12V jump starter rated at 4000 amps. It restarts a dead car battery when you press the BOOST button, even if the battery voltage is very low. It starts all gasoline engines and diesel engines up to 10.0L, and it works with cars, motorcycles, pickup trucks, RVs, tractors, trucks, cargo vans, ATVs, snowmobiles and yachts.

It has 10 built-in protections against misuse and sparks. The smart jumper cables have all-metal clamps. The case is hardened plastic with rubber corners to withstand drops. A built-in flashlight helps in night-time emergencies. The jump starter works from -4°F (-20°C) to 140°F (60°C).

A full charge can jump-start most vehicles over 60 times. The unit can also charge phones, tablets, cameras, GPS systems and other portable devices through its two USB ports (one supports fast charging) and a USB Type-C port (5V/3A). If it sits unused for a long time, charge it every 2 to 3 months.

Model

GP4000

Voltage

12V

Engine support

All gasoline engines and diesel engines up to 10.0L

Compatible vehicles

Cars, motorcycles, pickup trucks, RVs, tractors, trucks, cargo vans, ATVs, snowmobiles, yachts

Jump starts

Over 60 on a full charge for most vehicles

Ports

2 x USB (one fast charging), 1 x USB Type-C (5V/3A)