Rexing USA
Rexing 2-in-1 Jump Starter & Tire Inflator, 7200mAh Portable 12V Car Battery Booster with 150 PSI Air Compressor, LED Flashlight, USB Power Bank for Roadside Emergencies
- 2-in-1 Multi-Function Design – Combines a powerful jump starter and tire inflator in one compact device, ideal for roadside emergencies, daily driving, camping, and travel.
- 7200mAh Portable Jump Starter – Built-in 7200mAh battery provides reliable power to jump start most 12V vehicles, including cars, motorcycles, ATVs, and other small vehicles.
- Built-in Tire Inflator – Integrated 150 PSI air compressor quickly inflates car tires, bike tires, motorcycle tires, sports balls, and other inflatables, making it a convenient emergency tool for every trip.
- LED Flashlight for Emergencies – Equipped with a bright LED flashlight to provide visibility during night repairs, roadside emergencies, camping, or low-light situations.
- Compact & Reliable – Designed for portability and everyday convenience. Features USB charging support to help power compatible devices when needed, with durable construction for reliable use at home, on the road, or outdoors.
A PORTABLE STARTING SOLUTION
STARTING CURRENT
A flat battery.
A way forward.
Keep portable starting power close at hand for compatible cars, motorcycles, ATVs and other 12V vehicles.
Starting performance depends on battery condition, engine size, charge level and temperature. Follow the product and vehicle instructions.

ONE DEVICE. TWO ROADSIDE JOBS.
From the battery
to the tires.
Bring a jump starter and air compressor together in one portable unit. Use the hose for tire inflation, or attach a suitable nozzle for balls and other compatible inflatables.
150 PSI is the compressor’s maximum pressure. Use the pressure recommended for your vehicle, tire or inflatable.
POWER BEYOND THE ENGINE BAY
A useful reserve.
Wherever you stop.
The 7200mAh battery supports jump starting and USB charging for compatible devices. Recharge the RJ21 through its USB-C input before your next trip.


WHEN DAYLIGHT RUNS OUT
Light for
the next step.
Illuminate a roadside check or a campsite with the built-in LED flashlight. Brightness options and signaling modes add useful light when you need it.
THE ESSENTIALS, TOGETHER
Your compact
roadside kit.
Keep the tools for jump starting and inflation together, ready for the drive ahead.
- 01RJ21 2-in-1 main unit
- 02Intelligent battery clamps
- 03Air hose and four nozzle adapters
- 04USB-C charging cable

THE DETAILS THAT MATTER
Everything
at a glance.
Jump starting & vehicle compatibility
- Model
- Rexing RJ21
- Vehicle system
- 12V
- Starting current
- 1200A
- Gasoline engines
- Up to 5.0L
- Diesel engines
- Up to 3.0L
Tire inflation
- Maximum pressure
- 150 PSI
- Applications
- Car, motorcycle and bicycle tires; sports balls and compatible inflatables
- Controls
- LCD pressure display, pressure adjustment and unit selection
- Connections
- Air hose and nozzle adapters
Battery, USB power & lighting
- Battery capacity
- 7200mAh / 26.6Wh
- Charging connection
- USB-C input
- Device charging
- USB-A output for compatible devices
- Lighting
- Built-in LED flashlight with brightness and signaling modes
Before you head out
Read the supplied instructions and check the unit’s charge before use. Confirm your vehicle has a compatible 12V system and is within the listed engine limits.
For inflation, follow the vehicle or inflatable manufacturer’s pressure recommendation and use the appropriate hose or nozzle. Follow the RJ21 instructions for operating times and cooling intervals.
REXING RJ21
