Say Goodbye to Electrical Outlets! 3 Criteria to Select a Suitable Power Bank for Portable Monitor
2023/03/13 ｜By G. Editor
When using portable monitor or other mobile devices on the go, it often needs a power bank. However, there are hundreds of power banks on the market. How to choose the right one? And what is the meaning of the rated capacity and the outpower? No worries, let us check the power bank that best suits your devices together!
Check the Power Consumption of Portable Monitor or Mobile Devices!
Firstly, we should know the power requirements of the portable monitor and mobile devices. Check the specifications of the portable monitor or mobile device and find the column of rating power. Taking GeChic M505E portable monitor as an example, the rating power is: 5V---2.0A (V=Rated voltage, the electromotive force; A=Rated current, the amount of electronic charge flowing). Thus, we know the portable monitor allows an input voltage of 5V, and a current of 2 amperes!
5V voltage is the most common voltage of mobile devices. Almost all power banks on the market support 5V voltage and 2A output. However, if you need the power bank to support higher wattages or fast charging devices, such as laptops, mobile phones, etc., you will need to check the device’s rated power consumptions and fast charging specifications carefully to avoid voltage mismatch or insufficient power.
Three Criteria for Choosing a Mobile Power Supply!
There are many types of mobile power banks on the market with various specifications. Although high-specification, high-capacity, fast-charging power banks support a wide range of mobile devices, they are relatively expensive and heavy. Therefore, we recommend that you focus on the 3 specifications below to quickly pick out the right power bank!
1. Output Power
For example, the M505E portable monitor with 5V 2A means the power bank for the monitor should be with an output voltage of 5V to avoid getting damaged by high voltage! The 2A represents the maximum current power consumption of the monitor.
Check the formula to calculate wattage:
Voltage (V) x Current (A) = Power (W) Wattage
💡 Hence, we know the power consumption of the M505E is 10W.
If the current of the power bank exceeds 2A (such as: 2.5A, 3A), the output wattage of the power bank will also be higher (12.5W, 15W), and definitely it is able to power a portable monitor that requires 10W!
The power banks, which claime to support fast-charging function, can support a wide range of voltage and power, whether it is QC or USB-PD in power bank. Currently, the mainstream fast-charging power banks on the market support 3A. But be noted, your mobile device must support the fast-charging function to charge rapidly!
🔋 Supplementary Safety Note:
Based on flight safety, airlines have successively made the regulations for carrying power bank on airplane in recent years. Airlines do not allow power banks in checked luggage. Power banks under the capacity of 100wh are allowed to be carried in the carry-on bag. With the capacity of 100wh – 160wh, it is not allowed to carry more than two. Meanwhile, power banks more than 160Wh is prohibited in flight.
2. Rated capacity
Batteries are regulated to be marked with rated capacity in units of milliamp-hours (mAh). Please be mindful rated capacity does not equivalent with battery capacity. Rated capacity is the amount of electric charge after deducting energy conversion losses, which is closer to the actual amount available for users. This indicator helps users roughly judge number of times of power banks to fully charge devices! However, the actual times will be varied by factors like the screen brightness or volume of the connected devices. Taking a 5V---2A portable monitor as an example, we recommend using a power bank with a rated capacity of 10000 mAh at least to ensure the power bank can power the monitor to 5 hours!
❇️ The followings are the common capacities that the power bank can charge the portable devices:
| 27,000 mAh | Fully charge multiple devices once |
| 20,000 mAh | Fully charge a tablet or laptop once or twice |
| 10,000 mAh | Fully charge a smartphone once or twice |
| 5000 mAh | Fully charge a smartphone once |
3. Security
The news of power bank exploding is heard from time to time. To use power bank safely, you must buy a power bank with FCC, UL or CE certification to ensure the quality and safety of the battery. If a power bank is without any certification, please don’t buy it!
✅ FCC, UL and CE marks ▼
Portable Gaming & Working Stations
Finally, let's test the battery life of portable game station!
First, take out the USB cable in the box of M505E monitorand connect to the DCIN port of M505E and power bank. And then use the HDMI cable to connect to the Switch dock and the HDMI-IN port of M505E. A portable Nintendo Switch game station is ready!
Let's test how long the 13,000 mAh power bank lasts when charging the M505E 15.6-inch monitor, at brightness 70 and volume 50.
✅ The answer is revealed! The power bank can be used with the monitor up to 12 hours. 🎉
You can consider this kind of connection if you love camping too. When in the environment with a few sockets, you can still have a portable game station in tent by simple connections!
If you are nomad workers, you can consider to use a power bank above 20,000 mAh to power your laptop and charge the portable monitor through the USB port on the laptop. In this way, your workspace will not be limited by sockets and you can enjoy the efficiency of the dual monitors anytime, anywhere!
