DEJUNPIOOL Portable Air Compressor Tire Inflator — Dual 21V 4000mAh Batteries, 150 PSI, Quiet Auto-Off

DEJUNPIOOL’s portable air compressor is a battery-powered tire inflator with dual 21V/4000mAh batteries and up to 150 PSI that quickly and quietly fills car, SUV, and motorcycle tires with automatic shutoff for precise inflation.

Lightweight but robust, this cordless pump combines two rechargeable batteries and a DC car adapter so you can inflate tires on the road or at home without relying on outlets. Built from reinforced ABS, it balances durability with portability; the digital gauge and multi-mode LED make night-time roadside inflation straightforward, while the compact storage bag keeps accessories organized.

How fast and powerful is this inflator?

The twin 21V 4000mAh batteries give the DEJUNPIOOL inflator strong, consistent airflow capable of bringing an average car tire from 0 to 36 PSI in under four minutes per tire when fully charged. A 12V DC adapter lets you run the unit directly from your vehicle if batteries are low, and the motor is engineered to run quietly compared with traditional compressors.

• Dual batteries: inflate up to four car tires per full charge (0→36 PSI each).
• 150 PSI maximum pressure for cars, SUVs, and light trucks.
• DC 12V power option to operate from a vehicle socket.
• Low-noise operation for less disturbance at roadside stops.

Will the digital gauge keep tire pressure accurate?

Yes — the digital display reports pressure in real time and supports PSI, BAR, KPA, and KG/CM², so you get the unit you need regardless of regional standards. The system features ±0.5 PSI precision and an auto-shutoff that stops inflation at your target to prevent over-inflation.

• Clear digital readout with selectable units (PSI/BAR/KPA/KG/CM²).
• High accuracy: around ±0.5 PSI for consistent results.
• Auto-stop at set pressure prevents overfilling.

What emergency and convenience features are included?

This pump includes a three-mode LED (steady, slow flash, fast flash) to illuminate work areas or act as a visible distress signal. A set of nozzles (long nozzle, tapered nozzle, and ball needle) covers inflating tires, sports balls, inflatables, and more. The kit is packaged with a storage bag for tidy transport and protection against impacts.

• 3-mode LED light for work illumination and emergency signaling.
• Three nozzles for car valves, inflatables, and sports equipment.
• Compact storage bag and impact-resistant ABS housing.

How should I maintain battery life and store the unit?

For best long-term battery health, fully charge the batteries before first use and avoid leaving the unit in extremely hot conditions like a closed car trunk in high heat. The pump operates reliably across a wide temperature range but should be stored within recommended limits to preserve battery longevity and internal components.

• Charge fully before first use to optimize battery lifespan.
• Store between 14°F and 122°F; avoid prolonged extreme heat.
• Use the vehicle DC adapter when batteries are low to avoid deep discharge cycles.

Who is this for? Drivers who want a dependable, portable inflation solution—commuters, delivery drivers, road-trippers, and outdoor enthusiasts—will appreciate the DEJUNPIOOL inflator’s balance of speed, accuracy, and portability. It’s designed for anyone who wants quick roadside inflation without noisy compressors or permanent vehicle installs, plus travelers who need pressure units and nozzle versatility for inflatables and sports gear.