This power bank is a practical solution for those who need a portable power source for devices such as air pumps or other accessories that use a car cigarette lighter socket. Equipped with a high-capacity 11.1V 4000mAh (44.4Wh) lithium battery, it provides sufficient power for devices with a maximum load of 12V and 15A, delivering up to 140W of output power.

The power bank can be charged via a USB port at 5V/2A or 9V/2A, supporting Power Delivery (PD) fast charging technology. This reduces the charging time to approximately 6 hours for standard charging (5V/2A) or around 4 hours with a compatible fast charger (9V/2A). The battery status is indicated by a level indicator, showing the current charge level in four stages (25%, 50%, 75%, 100%).

The device includes multiple safety features, including overcharge, over-discharge, and overload protection. In case of overcurrent (exceeding 15A), the battery level indicator will flash, indicating the need to disconnect the load and reset the device with the power button. The power supply automatically turns off after 1 minute of inactivity or after pressing the power button for 3 seconds