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Product guide

S ZEVZO H021 5000A 12V Car Jump Starter

The S ZEVZO H021 car jump starter is a compact 12V lithium-ion booster with a listed 5000A peak output, LCD display, USB charging and three flashlight modes. Its listed engine-size coverage and built-in power-bank function suit roadside preparedness, while the supplied customer feedback flags mixed durability experiences, particularly with clamps.

At a glance

The listing claims 5000A peak output and compatibility with engines up to 10.0L gas and 8.0L diesel.
Two USB outputs are listed for charging devices, and the product is described as a 74Wh power bank.
LCD display and a flashlight with steady, strobe and SOS modes are listed.
A carrying case and smart jumper clamps are specified in the package contents.

Price

$53.18Save 41%

Reference price: ~~$89.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

S ZEVZO H021 Car Jump Starter, Peak 5000A Jump Starter Battery Pack for Up to 10.0L Gas and 8.0L Diesel Engines, 12V Portable

Pros and cons

Pros

Compact listed dimensions and 323 g listed weight make it easier to store in a vehicle than a larger roadside kit.
USB outputs add a way to charge phones and other USB devices away from a wall outlet.
The flashlight offers steady, strobe and SOS modes for roadside use.

Cons

The reported durability feedback is mixed, including customer reports of clamps falling apart.

Technical specifications

20 specifications

Identity and display
Brand	S ZEVZO
Model	H021
Screen technology listed	LCD

Power and battery
Battery type	Lithium Ion
Voltage	12 volts
Battery capacity	20000 milliamp_hours
Peak output current	5000 A
Energy capacity	74Wh

Charging and lighting
USB outputs	(5V/3A) and (5V/2.1A)
Flashlight brightness	500-lume
Flashlight modes	stable, strobe, and SOS

Dimensions and weight
Dimensions listed	1.6"D x 5.7"W x 3.1"H
Weight listed	323 g

Listed vehicle compatibility
Engine-size claim	up to 10-liter gas and 8.0-liter diesel engines
Vehicle types	All of the above, Lawn Mower, Motorcycle, Passenger Car, RV, UTV, Van

Additional listed operating details
Maximum starts per full charge	at most 40 times
Standby time	24 months long standby time
Working temperature	-4℉ to 140℉
Water and dust resistance description	dustproof and water-resistant
Safety protections	10 intelligent safety protections

What to know before buying

The 5000A peak output, engine-size coverage, start count and operating claims are manufacturer listing claims, not independently verified performance. Follow the manual for connection and charging instructions.

What’s in the box

Included

H021 car jump starter (1)
Portable carrying case (1)
Smart jumper clamps (1)
USB charging cable (1)
User manual ×1

Who is it for?

A good fit for

Drivers wanting a compact emergency jump starter with a USB power-bank function and flashlight.
Owners of listed 12V vehicle types who want a portable booster for roadside storage.

Less suited to

Buyers who need independently verified starting performance or proven long-term clamp durability.
People looking for a unit with a tire inflator, which is not among the listed features.

S ZEVZO H021 5000A 12V Car Jump Starter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 540 ratings

5 stars82%82%
4 stars10%10%
3 stars4%4%
2 stars1%1%
1 star3%3%

Customer feedback highlights compact size, charge retention and usefulness as an emergency power source, including for charging phones. These reports may matter to drivers keeping a 323 g listed unit in a roadside kit, but do not verify the claimed 5000A output or engine-size coverage. Durability feedback is mixed, with some customers describing the unit as well-made and others reporting clamps falling apart.

Positive themes

Customers describe it as compact and report that it stays charged and supplies power when needed.
Some customers appreciate its usefulness for emergency kits and phone charging.

Mixed feedback

Durability experiences vary. Some customers report that the clamps fell apart, while others find the product well-made.

Frequently asked questions

What vehicles does the listing say the H021 can jump-start?

It claims suitability for 12V vehicles with engines up to 10.0L gas or 8.0L diesel, and lists cars, motorcycles, lawn mowers, RVs, UTVs and vans. These are listing claims, not independently verified limits.

Can the H021 charge phones?

The listing describes it as a 74Wh power bank with two USB outputs, rated (5V/3A) and (5V/2.1A), for USB devices.

What is included?

The explicit included-components list names the H021 jump starter, carrying case, smart jumper clamps, USB charging cable and user manual.

What do customers report about durability?

Customer feedback is mixed. Some describe the unit as well-made, while others report that clamps fell apart.