Product Price Peak Current (Ampere (A)) Cranking Amps (Ampere (A)) Starting Power (Joule (J)) Voltage Output (Volts (V)) Charging Ports (Port) Emergency Light Reversed Polarity Protection Size and Weight (Length x Width x Height (LxWxH) in cm, Weight in kg)
Gooloo GP4000
US
£66.40 4000 A 12 V 2 USB-A outputs, 1 USB-C input/output, 1 DC output 29 x 11 x 14 cm; 1.68 kg

The Gooloo GP4000 is a high-power 12 V jump starter rated at 4000 A, suitable for gasoline engines and diesel engines up to 10.0L. It also works as a power bank with USB-A, USB-C, and DC outputs, and includes safety protections, smart clamps, and an emergency LED flashlight. It suits drivers of cars, trucks, RVs, motorcycles, boats, and other large vehicles.

★ Ideal for

The GP4000 is beginner-friendly because its smart clamps provide reversed-polarity protection and its indicator system helps confirm a safe connection, while the BOOST button supports severely depleted 12 V batteries.

AstroAI S8 Jump Starter
US
£33.11 1500A 300A 12V One 5V 2.1A USB-A output and USB-C input 7.9 x 4.5 x 3.7 in; 0.95 lb

The AstroAI S8 is a compact 1500A jump starter for 12V vehicles, supporting gasoline engines up to 6.0L and diesel engines up to 3.0L. It includes a USB power bank, three-mode LED emergency light, boost button, and reverse-polarity protection, making it suitable for everyday drivers and emergency kits.

★ Ideal for

It suits beginners because its 12V design, boost button, reverse-polarity protection, clear connection indicators, and three-mode LED light simplify jump-starting and nighttime use.

AvaPow A28
US
£66.40 3000A 12V 2 USB QC3.0 ports and 1 Type-C port

The AvaPow A28 is a 3000A, 12V jump starter for vehicles with engines up to 8.0L gasoline or diesel. It includes two USB QC3.0 ports, a Type-C port, a 21-bulb emergency LED light, and smart safety protections, making it suitable for drivers who want roadside backup and portable device charging.

★ Ideal for

The A28 suits beginners because its smart clamps provide reverse-polarity alerts and protection, while the force-start function, 21-bulb emergency light, and 12V support make emergency use straightforward.