12V Battery Booster with 150 PSI Compressor

12V battery booster with compressor: your car boot no longer needs a roadside assistance service

A winter morning, a dry click under the hood and nothing else. Or a tire at 1.4 bar spotted at a motorway service area at 10 p.m. This Rscrola 12V battery booster solves both scenarios with a single device: instant emergency jump-starting on one hand, a 150 PSI air compressor on the other. A portable battery jump starter that fits in a glove box and saves you the wait and the roadside assistance bill.

Four emergency tools combined in a single device

The principle is simple: instead of carrying a battery booster, an inflator, a power bank and a flashlight, everything is here in a single device. This 4-in-1 car battery booster recharges at home via USB-C and waits in the boot for the day you need it.

The LCD screen displays the remaining charge level and the target pressure during inflation: no more guessing. This type of display is what distinguishes a battery booster with an LCD screen from a budget model where you connect blindly.

Peak current, air pressure: the figures announced by Rscrola

The manufacturer's data sheet announces a peak current of 3000 A for a starting current of 1500 A, while the original listing mentions 2000 A peak — we are reporting both values as they are communicated. The announced capacity is 99,800 mAh in 12 V lithium-ion cells.

Regarding engines, the manufacturer indicates compatibility with up to 6.0 L gasoline and 4.0 L diesel engines. The built-in pump reaches 150 PSI with pressure pre-setting and automatic shut-off: the built-in tire inflator turns off by itself when the requested value is reached, which prevents over-inflation.

• 12V emergency jump-starting — gasoline up to 6.0 L, diesel up to 4.0 L according to the manufacturer
• 150 PSI air compressor — pre-set pressure and automatic shut-off
• USB power bank — 5 V/3 A, 9 V/2 A and 12 V/1.5 A outputs for phone or tablet
• 1 W emergency LED light — three modes: fixed, SOS and flash
• Smart jump cables — reverse polarity, short circuit, overcurrent, overvoltage and overload protections
• Range from -40 °C to +80 °C — designed to stay permanently in the vehicle

Using the booster on a car that refuses to start

You connect the smart cable to the device, clamp the red one to the positive terminal then the black one to the negative terminal or a metal ground, and wait for the green indicator before turning the starter. Jump-starting a dead battery takes less than a minute, without a second vehicle and without special expertise.

The smart cable refuses to send current if the polarity is reversed: this is what makes the operation accessible to someone who has never jump-started a car. Recharge the device after each use and check its level two or three times a year, otherwise you will find it empty the day you need it.

Can a booster start a diesel in extreme cold?

That is the real question, because a cold diesel requires much more current than a gasoline engine. With the starting current announced here, a diesel engine up to 4.0 L is within the target range. Two precautions make all the difference: keep the portable jump starter charged above 50% in winter, and leave it connected for one minute before turning the starter to allow the vehicle's battery to recover its voltage.

The emergency equipment on board, as seen by Becquet Voiture

Becquet Voiture selects battery boosters that combine several genuinely useful functions rather than just listing figures. A French shop, a description in French, and a frank opinion on whether a more compact model is sufficient for your engine.

Never get stuck in a parking lot again: slide this 4-in-1 booster into your boot this week.

Type: Battery booster and portable jump starter
Brand: Rscrola
Functions: Emergency jump-starting, air compressor, power bank, LED light
Voltage: 12 V
Peak current: 3000 A announced (2000 A on the original listing)
Starting current: 1500 A
Capacity: 99,800 mAh, lithium-ion
Engines: Gasoline up to 6.0 L, diesel up to 4.0 L
Maximum air pressure: 150 PSI
USB outputs: 5 V/3 A, 9 V/2 A, 12 V/1.5 A
Type-C input: 5 V/3 A, 9 V/2 A, 12 V/1.5 A
LED power: 1 W, white light, 3 modes
Protections: Reverse polarity, short circuit, overcurrent, overvoltage, overload
Operating temperature: -40 °C to +80 °C
Certifications: CE, FCC, ROHS, UL, KC
Other uses of the inflator: Two-wheel tires, sports balls
Contents: 1 booster, 1 smart jump cable, 1 air hose, 1 set of inflation adapters, 1 USB charging cable, 1 manual