The Portable Electric Air Compressor is a compact and versatile device designed for inflating various items, from bicycle tires to sports balls. It is equipped with a lithium battery, making it portable and suitable for on-the-go use. The device features a clear digital display that shows both measured and preset pressure values, along with a battery indicator.
Function Description:
The primary function of this device is to inflate items requiring air pressure. It operates by connecting a hose to the item and then initiating the inflation process. The compressor allows users to preset a desired pressure value, and it will automatically stop inflating once that value is reached. This feature prevents over-inflation and ensures safe operation. The device also includes an LED light for illumination, which can be useful in low-light conditions. For charging, it uses a Type-C cable, connecting to a 5V/1.5A power adapter.
Important Technical Specifications:
- Product Name: Portable Electric Air Compressor
- Product Model: UP-AC-220014
- Dimension: 137 x 55 x 55 mm
- Weight: 360 g
- Pressure Range: 0-150 PSI / 0-10.3 BAR
- Working Temperature: -10 to 45°C
- Battery Capacity: 850 mAh x2 / 7.4V
- Charging Input: 5V = 1.5A
- Packing List: 1x Mini electric air pump, 1x Storage bag, 1x Presta adapter valve, 1x Type-C cable, 1x Schrader valve, 1x Inflating needle.
Usage Features:
The compressor offers several user-friendly features:
- Power On/Off: Press and hold the on/off button for 3 seconds to turn the device on or off. In the power-on state, a short press of the start-stop button initiates or halts inflation. The pump automatically shuts down after 3 minutes of inactivity or when the battery is low.
- Battery Indicator: A visual display shows the battery level: 4 bars (100%), 3 bars (60%), 2 bars (30%), and 1 flashing bar (5%, indicating low battery and a need for charging).
- Hose Storage: The inflation hose can be conveniently stored in a dedicated hole on the product, with the threaded side inserted into the storage hole.
- Charging Method: Connect the included Type-C charging cable to a 5V/1.5A power adapter (not included). The battery indicator flashes during charging and shows a continuous light when fully charged. Note that the air pump cannot be used while charging.
- Valve Connections:
- Schrader Valve: Common for mountain bikes, electric bikes, motorcycles, and cars. Connect the Schrader valve to the compressor's connector for inflation. For deflation, press the inner needle of the valve with a suitable tool (e.g., Allen wrench).
- Presta Adapter Valve: Required for road cycling and some mountain bikes. Connect the Presta valve to the adapter, unscrew the tire's Presta valve, and then connect the Presta valve with the adapter to start inflation. Deflation involves unscrewing the Presta valve and pressing it.
- Inflating Needle: Used for basketballs and footballs. Connect the inflating needle to the Schrader valve and insert it into the ball's valve.
- Measuring Pressure: When the pump is on and connected to an object, the measured pressure is displayed on the screen.
- Mode Switching: Users can select different inflation modes (Bicycle, Custom, Ball) by pressing the mode switching button. Each mode has a reference value and an adjustable range (e.g., Bicycle mode: 38 PSI, range 0-150 PSI/0-10.3 BAR).
- Unit Switching: Long-press the unit switching button to toggle between different pressure units. The manual specifies 1 BAR = 14.5 PSI.
- Preset Pressure: The preset pressure value can be adjusted using the "+" and "-" buttons. A long press allows for quick adjustment. The selected mode and preset pressure are automatically saved for future use.
- LED Lighting: The LED light can be turned on or off by pressing the dedicated button.
- Pressure Value Reset: If the measured pressure is not zero when the device is powered on, a long press of the reset button for 3 seconds will initiate an automatic reset. It's important not to connect the product to any inflatable items during a reset. The product is factory calibrated, but manual reset can improve accuracy if altitude differences or sensor tolerance cause non-zero readings. Resetting in high temperatures is not recommended.
- Pressure Value Lookup: The manual advises users to look up the correct pressure value for the object they intend to inflate to prevent over-inflation and potential explosions. It provides specific pressure ranges for various items like kids' bikes (18-30 PSI), 10-16 inch tires (30-45 PSI), 20-30 inch tires (38-55 PSI), road bikes (100-120 PSI), Ninebot self-balancing scooters (40-60 PSI), wheelchairs/electric rides (30-45 PSI), motorcycles/electric vehicles (1.8-3.0 BAR), cars (2.2-2.8 BAR), kids' balls (3-6 PSI), basketballs (7-9 PSI), footballs (10-12 PSI), volleyballs (4-6 PSI), and rugby balls (10-14 PSI).
Maintenance Features:
The manual includes a troubleshooting section to address common issues:
- Slow Inflation: Check battery charge, air pipe leakage, tightness of hose connections, and leaks in the inflatable item.
- Cannot Inflate on Boot: Verify battery charge and ensure current tire pressure is not higher than the preset value.
- Preset Pressure Cannot Be Adjusted: Confirm that the correct inflation mode is selected (Custom mode allows adjustment within 3-150 PSI).
- Inflation Occurs, But Pressure Display Doesn't Change: Objects with pressure lower than the air pump's capacity (e.g., balloons) cannot be measured. For empty tires, the measured pressure will appear after some inflation.
- Inflator Shuts Down Automatically After Connecting Hose: The air pump automatically turns off after 3 minutes of no operation. Press the on/off button to restart.
- Leak in Connection: Tighten the connection.
- Inconsistent Indicator Color/Pump State During Inflation: This is a normal phenomenon due to significant voltage drop in the lithium battery during discharge, causing a color inconsistency between the indicator light in inflated and standby states. It is not a malfunction.
- Indicator Light Does Not Light Up After Charging: Change the adapter and cable, then try charging again.
Safety Precautions:
The manual emphasizes several safety precautions:
- Do not leave the product unattended during inflation.
- Keep it away from combustible and explosive materials.
- Avoid moisture, sand, and prevent drops.
- Do not store the product in extremely cold or hot places.
- Due to the lithium battery, do not throw the inflator into fire or discard it casually.
- Keep it out of reach of children.
- The hose can overheat after prolonged use; avoid touching it and the connector immediately after operation.
- The electric air pump should only be used for emergency car tire replenishment, not for prolonged inflation.
- The mini pump does not automatically stop when inflating balloons or toy balls with very low air pressure values that cannot be sensed.
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