Why Does Your Wireless Charging Power Bank Overheat? Here's How to Keep It Cool!

As wireless charging becomes more popular, the wireless charging power bank has become an essential tool for convenient, cable-free charging on the go. But have you ever noticed your wireless charging power bank or phone getting warm while charging? Understanding the technology behind it — and how to reduce excess heat — is key to using your wireless charging power bank safely and efficiently.

1. What Is a Wireless Charging Power Bank?

A wireless charging power bank is a portable battery that can charge your device without physical connectors. Instead of plugging in your phone with a cable, you simply place it on the wireless charging power bank’s magnetic pad — and charging begins.

This works through electromagnetic induction, the key principle behind all wireless charging power bank technology.

2. How Does Wireless Charging Work?

Wireless charging operates on a concept called inductive coupling, which powers the wireless charging power bank. Here’s how it works:

1. The wireless charging power bank contains a coil that generates a magnetic field when powered.

2. Your device contains a matching coil that receives this field.

3. The energy is converted into electricity, charging your phone — all without cables.

The simplicity of a wireless charging power bank makes it ideal for daily use, but it’s not without drawbacks — namely, heat.

3. Why Does Wireless Charging Generate Heat?

Compared to wired options, a wireless charging power bank is slightly less efficient, leading to some energy loss. That lost energy becomes heat, which can build up during longer charging sessions.

Several factors affect heat generation in a wireless charging power bank:

• Misalignment between the charging coils

• Use of incompatible or bulky phone cases

• Enclosed or non-ventilated charging environments

• Using your phone while charging (like watching videos or gaming)

• Low battery levels that require high charging output

Understanding and managing these factors helps you get the most out of your wireless charging power bank.

4. How to Reduce Heat While Wireless Charging

To reduce heat buildup when using a wireless charging power bank, try the following:

✅ Ensure Proper Coil Alignment

Keep your phone centered on the charging surface. A quality wireless charging power bank like ArmorGo features magnetic alignment to maintain efficiency and reduce heat.

✅ Use Wireless Charging When Battery Is Above 50%

When your phone battery is above 50%, your wireless charging power bank works more efficiently with less heat. Below 50%, wired charging is faster and cooler. In short: wireless charging power banks are perfect for maintaining full charge, not for emergency boosts.

✅ Avoid Thick or Non-Compatible Cases

Use heat-dissipating and MagSafe-compatible cases. Benks offers ultra-thin cases with high thermal conductivity and N52 magnets — perfect for any wireless charging power bank.
👉 Check compatible cases

✅ Keep Your Devices in a Well-Ventilated Area

Avoid charging your phone and wireless charging power bank in tight, enclosed spaces like backpacks or under pillows. Airflow helps manage heat.

5. Recommended: BENKS ArmorGo 5000mAh Wireless Charging Power Bank

If you're looking for a portable wireless charging power bank that combines sleek design with practical power — meet the BENKS ArmorGo 5000mAh.

📏 Ultra-Slim & Pocket-Friendly
Weighs just 116g and measures only 12.8mm thick — ideal for a carry-anywhere wireless charging power bank.

🧲 Strong Magnetic Hold with N52 Magnets
Keeps the phone locked in position while the wireless charging power bank powers up your device.

🔋 Need more power?
Check out the ArmorGo 10000mAh Wireless Charging Power Bank — same design, double the capacity.