Question 1

Why does my power bank get hot when charging my phone?

Accepted Answer

Power bank heating during charging is a common phenomenon, usually due to:

Question 2

Unable to charge or charging is slow

Accepted Answer

Damaged Components: The charging cable, port, or the power bank's internal circuit may be damaged. Performance Degradation: The power bank's battery performance has declined due to overcharging or excessive usage. End of Lifespan: The power bank has reached the end of its intended service life.

Question 3

Power bank shows power but won't charge the device

Accepted Answer

Check the Charging Cable: A common issue is poor contact or a faulty cable, especially with lower-quality cables often bundled with the power bank. Try a different charging cable to test. Power Bank Output Fault: If changing the cable still doesn't work (or if the same cable works with other power sources), the power bank's output port or internal components likely have a defect. It is recommended to contact the vendor for after-sales service instead of attempting self-repair.

Question 4

The power bank's charge drains quickly

Accepted Answer

Battery Cell Degradation: If the power bank has been used for a long time, the internal battery cells (cores) will naturally experience a noticeable decline in capacity after numerous charge/discharge cycles. Substandard Quality: If a newly purchased power bank drains quickly, it is highly likely a low-quality or counterfeit product. False/Exaggerated Capacity or Poor Cells: If a fully charged 10,000mAh power bank can only charge a 3,000mAh phone once, the actual capacity is likely exaggerated (capacity mislabeling) or the internal cells are of very poor quality. Using Fast Charging Ports: The charge will deplete faster when using a fast-charging port. This is normal because fast charging requires the power bank to consume more of its own power, which slightly reduces the energy conversion efficiency and makes it seem like the charge is draining quickly.

Question 5

Power bank takes a very long time to fully charge

Accepted Answer

The time required to fully charge a power bank depends mainly on its capacity, its supported input voltage/current, and the power adapter's supported voltage/current. This information is usually detailed in the power bank's user manual. High Capacity: It is not unusual for a high-capacity power bank (e.g., 20,000mAh) to take over ten hours to fully charge. Matching Components: If your power bank supports a high input current (e.g., 5V/2.1A), you should use a compatible power adapter that supports a correspondingly high current output to achieve the fastest charging time. The slowest component in the charging chain (adapter or cable) will determine the final speed

Question 6

Inaccurate power indicator display

Accepted Answer

Power banks typically use multiple indicator lights or a digital screen to show the remaining charge Design Limitation: Minor inaccuracies can be due to the power bank's inherent design limitations, such as insufficient display precision. Internal Fault: If the indicated charge differs significantly from the actual capacity, the power bank likely has an internal fault or is of poor quality.

Question 7

Power bank power percentage "jumps" (e.g., drops from 5% to 0% instantly)

Accepted Answer

This phenomenon, where the charge quickly drops from a certain percentage (e.g., above 5%) to 0%, is most common in multi-cell power banks (10,000mAh or higher) with a series design. The primary cause is poor cell matching during production (before welding), resulting in excessive differences in voltage and internal resistance among the individual cells. During discharge, one cell reaches its cutoff voltage sooner than the others. The fuel gauge IC (integrated circuit) detects that one cell has hit the limit, automatically stops the discharge process, and updates the display to 0%.

Question 8

What is the typical lifespan of a power bank?

Accepted Answer

A power bank's lifespan is primarily determined by the type of battery cell used, which dictates its cycle life. A quick, initial assessment can be made based on volume: all else being equal, a smaller volume for the same capacity usually means a longer lifespan because it typically requires better cell materials (e.g., pure ternary or pure cobalt) to achieve higher energy density. Larger-volume products often use a Lithium Manganese Oxide (LiMn₂O₄) based cell. The general definition of battery lifespan is when the capacity drops to 80% of its initial value.

Question 9

How to choose a power bank for charging phones and laptops?

Accepted Answer

For Phones: Phone batteries are usually smaller (2,500mAh - 8,000mAh). You can choose a power bank with a power output that is equal to or lower than your phone's charging power. The power bank's output is highly flexible for phones. For Laptops: Laptop batteries are larger (8,000mAh - 30,000mAh) and require higher charging power.

Question 10

How to choose a magnetic power bank?

Accepted Answer

Magnetic power banks are commonly used for Apple phone wireless charging. Apple Charging Standards:

Question 11

Why does charging stop at 80%?

Accepted Answer

Your iPhone may automatically stop charging at 80% to protect its battery from overheating, as part of iOS 17's thermal management strategy. Charging will resume once the device cools down. Moving it to a cooler spot can help speed up this process.

Question 12

What functions does the button have?

Accepted Answer

Pressing the button once displays the battery level and activates wireless charging. Holding it for 2 seconds turns off the lights and the wireless charging feature. Holding it for 5 seconds disables the "Instant Connect" feature.

Question 13

Why is my phone overheating?

Accepted Answer

We regulate the charging surface to stay below 104°F (40°C), but your phone may still heat up, especially under heavy use. If overheating occurs during charging, pause and let the phone cool down before resuming.

Question 14

Why can't I charge my AirPods?

Accepted Answer

If the AirPods case doesn't fully cover the charging area needed for wireless charging, the feature won't activate. Ensure the case is centered on the charging pad and press the button to start charging.

Question 15

How can I estimate the number of charges for my device?

Accepted Answer

Use this formula: (Power Bank Total Capacity × 0.65) ÷ Device Battery Capacity = Estimated Charges. For example, an iPhone with a 3,349mAh battery can get approximately 1.8 charges from a 9,600mAh power bank.

Question 16

How long does it take to recharge the power bank?

Accepted Answer

Recharge time depends on the charger's power and the ambient temperature. When using the included charger at 77°F (25°C), it takes about 2 to 2.5 hours.

Question 17

Why does the display show a recharging time of 99H 59M?

Accepted Answer

This occurs when a connected device's power consumption exceeds 30W (PD 20W), temporarily halting recharging to prioritize the device, or when a battery protection icon indicates high temperature, pausing charging until the temperature decreases.

Question 18

Is FIXERA Power Bank allowed on flights?

Accepted Answer

Yes, the power bank is flight-approved and can be taken on airplanes.

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