Automatic shutdown is set by the battery itself and is independent of the battery power supply.

A. Press and hold the "Power" button to turn the device on and off. The screen will display the self-test results, followed by relevant information. If the output is not enabled, the device will automatically shut down after 1 minute.

B. After the device is powered on, turn on the USB or DC switch. If there is no load on the USB or DC port, the device will automatically shut down after 5 minutes. However, if the USB load power is less than 2W, the device may incorrectly detect an unconnected load.

C. When the device is powered on, turning on the AC output will cause the device to automatically shut down after 8 hours, provided that there is no load on the AC output. If the AC load is less than 8 watts, the device may incorrectly detect that the inverter is in idle mode, resulting in power consumption.

The power of the product is lower than 20%, need to replenish the power.

The starting power of some devices is higher than the peak power of the product, or the nominal power of the device is higher than the actual power of the product.

The starting power of some devices is greater than the peak power of the product, or the nominal power of the device is greater than the actual power of the product: it is recommended to use the company's higher power products.

The product adopts air-cooling system, built-in fan to better help the product heat dissipation, the use of slight noise is normal.

Slight noise is a normal phenomenon.

Charger heating during charging is a normal phenomenon, the standard charger meets the national safety standards, you can rest assured that use! The standard charger meets the national safety standards, you can rest assured that the use!

When the port is connected to a small load device, the product will automatically turn off the output within the time set by the system to avoid forgetting to turn off the output during use. This prevents you from forgetting to turn off the output during use, which may cause the battery to run out of power.

Yes, all Purmar products are compatible with 12V car cigarette lighter sockets.

Charging speed: Car chargers typically have a power output of 120–200W; a 500Wh power bank will take approximately 3–5 hours to fully charge.

⚠️Precautions: The cigarette lighter may lose power when the vehicle is turned off. It is recommended to start the vehicle before charging to avoid draining the car battery.

The main factors are:

Sunlight Conditions:Direct sunlight > diffused light. Charging efficiency can drop by more than 50% on cloudy days/under trees.

Installation Angle: The solar panel maintains a 30°–45° angle with the sun for optimal charging efficiency. Regular angle adjustment is recommended.

Obstructions:Dust, leaves, and shadows significantly reduce charging efficiency. Timely cleaning is necessary.

Temperature Effects: High temperatures (>40°C) trigger battery protection, reducing charging power.