SYPOM 4000A Peak 12V Car Jump Starter Power Pack

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Product guide

SYPOM 4000A Peak 12V Car Jump Starter Power Pack

SYPOM’s 4000A Peak 12V Portable Car Jump Starter Power Pack is a portable booster with a claimed capacity for petrol engines and diesel engines up to 10.0L. It also serves as a USB power bank and has an LCD display and three-mode light, making it a roadside option with several functions in one unit.

At a glance

Claimed support for petrol engines and diesel engines up to 10.0L, with up to 70 jump starts per charge.
LCD shows battery level and operating status, according to the listing.
Dual USB outputs provide power-bank functionality. The light has flashlight, strobe and SOS modes.
The listing describes protection against overcurrent, short circuit and reverse polarity.

Price

£33.99Save 15%

Reference price: ~~£39.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Combines jump starting, dual USB power-bank outputs and a three-mode emergency light.
A compact listed size and claimed EVA case suit storage in a car.
Customer feedback reports portability and useful car-starting performance.

Technical specifications

12 specifications

Identity
Brand	SYPOM
Manufacturer part number	A43

Jump starting
Voltage	12 Volts
Amperage	4000 Amps
Claimed diesel compatibility	up to 10.0L diesel engines

Display and lighting
Screen technology listed	LCD

Power and battery
Battery type	Lithium Polymer
Battery capacity	4000 Amp Hours
USB outputs	dual USB outputs

Dimensions and vehicle fit
Dimensions listed	3.8D x 8.9W x 19.1H centimetres
Vehicle service type	Passenger Car
Automotive fit	Universal Fit

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: 4000 Amp Hours is given as battery capacity, while the title and feature text describe 4000A peak starting current. The listing also alternates between Passenger Car and broader claims for trucks, motorcycles and RVs, and between a generic 10L diesel claim and 10.0L diesel engines. Confirm that the engine compatibility and capacity figures suit your vehicle. Up to 70 starts is a listing claim, not an unconditional guarantee.

What’s in the box

Smart jumper cablesCheck selected pack
Charging cableCheck selected pack
EVA carrying caseCheck selected pack
User manualCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Drivers wanting a portable jump starter for roadside backup who also value USB charging and an emergency light.
Buyers whose vehicle falls within the listing’s stated 12V and engine-size claims, after checking the inconsistencies against their vehicle.

Less suited to

Anyone needing a confirmed battery capacity or verified compatibility for a specific vehicle without checking the listing details first.

SYPOM 4000A Peak 12V Car Jump Starter Power Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 710 ratings

5 stars74%74%
4 stars16%16%
3 stars5%5%
2 stars1%1%
1 star4%4%

Customer feedback highlights reported car-starting usefulness, portability, quick recharging and charge retention over months, alongside positive comments about value. These reports fit the intended role of a stored roadside booster, but do not verify the claimed engine coverage or up-to-70-start figure. The rating distribution is mostly five- and four-star, with a smaller one-star share, so experiences are not uniformly positive.

Positive themes

Customers report that it works well for starting cars.
Feedback describes it as portable and notes quick recharging and charge retention over months.
Some customer feedback describes it as good value.

Frequently asked questions

What vehicles is this jump starter intended for?

The listing specifies 12V use and gives a Passenger Car vehicle-service type, while its feature text also mentions cars, trucks, motorcycles and RVs. Check compatibility for your vehicle, as the coverage claims are not consistent.

What other functions does it offer?

The listing describes dual USB outputs for power-bank use, an LCD for battery level and operating status, and a light with flashlight, strobe and SOS modes.

How many jump starts does one charge provide?

The listing claims up to 70 jump starts per charge. Treat this as a maximum claim rather than a guaranteed result for every vehicle or use.

What is included?

The feature text claims a smart jumper cable set, charging cable, EVA case and user manual. The page does not provide an explicit package inventory, so check the selected listing for confirmation.