UPERFECT logo
UPERFECT logo

All articles

Can l Use Power Bank to Power Portable Monitor?Updated 2 months ago

Yes, you can use a power bank to power your portable monitor, but you should ensure it is capable of powering your device safely. Generally, we recommend using a portable power bank with a high power output, such as 65W. In this article, we will explain how to use a portable power bank to charge your monitor. If it fails to work, we will provide the best solution.

What Factors Should I Consider Before Using a Power Bank?

Power Output of the Power Bank

If your power bank's output doesn't match the monitor's power requirements (usually due to insufficient power output), it may fail to charge. You should ensure that the power bank supports an output that matches or exceeds the monitor's need. For instance, a monitor that requires 45W should be paired with a 45W power bank at least. Additionally, check the voltage (e.g., 5V, 9V, or 20V) to ensure compatibility.

Resolution of the Monitor

The monitor's resolution is an important fact for a power bank. Monitors with higher resolutions, such as 2K (QHD) or 4K (UHD), typically require more power than standard Full HD (1080p) monitors. If you plan to use a high-resolution monitor, ensure that your power bank has sufficient output to meet its power demands.

Protocols Supported by the Power Bank

Even with the same power output, the voltage and current are also important factors. For example, when connecting the same monitor to different devices, it may be need different voltage and current. You can use a standard 5V 2A power bank when connecting to a laptop. However, when connecting to a phone, you'll need a power bank that supports the PD protocol, which can provide 9V, 12V, or even 20V and above. 

So if you're planning to use a power bank to charge your portable display, make sure it supports the PD protocol. Some lower-powered options, like those with PD 1.0 or PD 2.0, might not provide enough juice. Check the table below to compare power outputs and protocols for different power banks. To get the best results, choose one with a wattage equal to or higher than your monitor's charger. For example, if your charger is 65W, pick a 65W or higher power bank for reliable charging.

(DP) Power Output

PD Protocol Type

5W - 10W

PD 1.0 / PD 2.0

10W - 18W

PD 2.0 / PD 3.0

18W - 30W

PD 2.0 / PD 3.0

30W - 60W

PD 3.0

60W and above

PD 3.0


Capacity of the Power Bank

The capacity of the power bank determines how long it can power your monitor. A higher capacity, such as 20,000mAh or more, allows for extended use of the monitor. For example, if a monitor consumes 65W, a 20,000mAh power bank can theoretically power it for about 1-2 hours, considering efficiency losses. 

Once you've decided on the power output you need, consider choosing a power bank with a higher capacity. This will ensure your display gets fully charged or allows for multiple charges. Based on an estimated Charging Efficiency of 80%, we've compiled a table showing the power bank usage times for monitors at different resolutions and brightness levels:

Power Bank Capacity (mAh)

Resolution

Brightness Level

Estimated Runtime (Hours)

10,000 mAh

1080p

0–50%

4–5

50–70%

3–4

70–100%

2–3

2K

0–50%

3–4

50–70%

2–3

70–100%

1–2

4K

0–50%

2–3

50–70%

1–2

70-100%

~1

20,000 mAh

1080p

0–50%

8–10

50–70%

6–8

70–100%

4–6

2K

0–50%

6–8

50–70%

4–6

70–100%

2–4

4K

0–50%

4–6

50–70%

2–4

70–100%

~1

30,000 mAh

1080p

0–50%

12–15

50–70%

9–12

70–100%

6–9

2K

0–50%

9–12

50–70%

6–9

70–100%

4–6

4K

0–50%

6–9

50–70%

4–6

70–100%

~2

How Do I Connect a Power Bank to a Portable Monitor?

Not all monitors are designed to be powered by power banks. Verify whether your monitor is compatible with portable power sources. Ensure that the power bank has enough and the correct types of ports (e.g., USB-C, USB-A) to connect seamlessly to the monitor. Once you ensure the power bank can power your potable monitor, you can connect them  as follows:

  1. Ensure the power bank is fully charged.
  2. Use a USB-C or other compatible cable. 
  3. Plug one end of the cable into the power bank.
  4. The other end is into the monitor's powr input port.
  5. Verify that the monitor is powered on (e.g., the indicator light is on or the screen starts up).

Why Should I Use a Power Bank for My Monitor?

The first advantage is you can power your monitor anywhere, like travel, outdoor use, or presentations. Second, you can keep using it when power outages. What's more, if you can't find a nearby outlet, a power bank can help you immediately. Last, it is easy to run with it for many portable monitors having low power needs.

What Are the Drawbacks of Using a Power Bank?

You can't always rely on the power bank, because it has a finite charge. Sometimes, you might buy a power bank doesn't match your monitor, so that you have to return and repurchase a new one. Besides, you may meet the drawbacks as follows:

  • Limited capacity may not fully charge larger devices like laptops.
  • High-capacity models take hours to recharge.
  • Larger power banks are less portable.
  • Capacity decreases over time.
  • Improper disposal adds to e-waste.
  • Low-quality models can overheat or cause fires.
  • Often unsuitable for high-wattage devices.

FAQs

Is It Possible to Use Any Power Bank for a Portable Monitor?

No, not all power banks are compatible with portable monitors. You should ensure the power bank's output meets the monitor's needs.

How Long Can a Power Bank Run a Portable Monitor?

Many power banks will provide estimated usage times, such as 1 hour, 1.2 hours, 2 hours, etc. You can usually find this information when purchasing it.

What Are Other Options Besides Power Banks for Monitors?

Besides power banks, you can power monitors using AC adapters, laptop USB-C ports (if supported), portable battery packs for higher wattage, or solar chargers for outdoor use.

Was this article helpful?
Yes
No