Common Advanced Portable Monitor Issues
How to use the monitor's OTG port?
If you are using a USB-C to USB-C connection, you can use the monitor's OTG port to connect external devices such as a mouse, keyboard, U disk, etc.
If you connect the computer to the monitor via HDMI, you need to connect another USB-A to USB-C cable from the computer's USB-A port to the monitor's USB-C port.
How to connect a wired/wireless keyboard and mouse to the monitor?
For Bluetooth, you can connect it directly to your smartphone or computer via Bluetooth pairing without having to use the monitor.
For 2.4G wireless and wired connections, please refer to the guide on how to use the OTG port.
How long does a battery monitor last?
If the brightness is set to about 50% and the volume to about 80%, the operating time is generally about 5-7 hours with the reverse charging function off. If the reverse charging function is activated, the working time is about 3-4 hours.
My laptop is connected to a battery monitor via a USB-C to USB-C cable. Will they charge each other? How to prevent it?
Usually not. The laptop does not charge the monitor, as the battery monitor's full-featured Type-C port cannot be charged, regardless of whether it is connected to the power adapter or other devices. This is to prevent overloading the battery during reverse charging.
The monitor can only charge the laptop if the monitor's reverse charging function is activated. However, it depends on whether the laptop supports 5V power supply, as most laptops require more than 5V power supply. Therefore, only a few laptops can be charged via a battery monitor.
Some battery models can be charged by laptops via a USB-A to USB-C cable by connecting the laptop's USB-A port to the monitor's USB-C power input port, just like a laptop charges a smartphone.
Does the reverse charging function support fast charging? How fast is it?
In the following situations, reverse charging cannot be activated:
- If the main device requires an original power supply via the device itself, such as Nintendo Switch, reverse charging will not work.
- For monitors equipped with a 5V 3A power supply, while the main device requires a 9V/15V/20V PD protocol power supply, the monitor will not reverse charge.
- Some models with a PD 30W power adapter cannot be reverse charged. If necessary, please contact our team.
For battery monitors, the reverse charge power is limited to less than 5V / 1.5A, 7.5W to prevent battery overload.
For other monitors without batteries, theoretically, the reverse charging power ≈ input power * 80% – rated display power, for example:
Original power adapter PD30W, rated power 15W, reverse charging power ≈ 30W*80% - 15W ≈ 9W. If PD45W is used instead, rated power 15W, reverse charging power ≈ 45W * 80% – 15W ≈ 21W. However, when the monitor is actually used, due to the specific usage, the power consumption increases, which leads to a reduction in the reverse output power, so the above value is only a theoretical value.
For monitors without a battery, the PD protocol is essential to enable fast charging, while different devices have different voltage requirements. For example, the PD 3.0 30W power adapter equipped with the monitor supports four groups of protocols: 5V 3A / 9V 3A / 15V 2A / 20V 1.5A. If the monitor uses 20V 1.5A and your main device uses the same 20V power supply, fast charging will be activated. Otherwise, the charging speed will be lower. Feel free to contact us if you want to know the exact PD power voltage of the monitor.
Other compatibility issues
The monitor can be connected and used with most devices that have an HDMI interface. Some devices have a low refresh rate by default and may not work properly when connected to the monitor. In this case, you may need to set the devices' refresh rate to over 30 Hz and try it first.
Sometimes, incompatibilities occur when the monitor is connected to a device with a full-featured Type-C port. If you have encountered such a situation, please contact us.
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