How to Fix Slow Charging on Samsung Galaxy (Super Fast Charge Not Working)

Samsung Galaxy supports Super Fast Charging (25W) and Super Fast Charging 2.0 (45W), but using the wrong charger or cable will revert you to slow 5–10W charging. Here's how to fix it.

Charging Speed Comparison

Fix 1: Use the Right Charger and Cable

• 45W Super Fast Charging requires a Samsung 45W adapter and a 5A USB-C to USB-C cable.
• Third-party chargers often don't support Samsung's fast charging protocol.

Fix 2: Enable Fast Charging in Settings

Go to Settings → Battery and Device Care → Battery → More Battery Settings and ensure Fast Charging, Super Fast Charging, and Fast Wireless Charging are all enabled.

Fix 3: Don't Charge Through a Hub or Extension

Charging through a USB hub drastically reduces speed. Plug directly into a wall outlet.

Fix 4: Remove Your Phone Case

Thick cases can trap heat. When the phone detects high temperature, it automatically throttles charging speed.

Fix 5: Check Battery Protection Mode

Go to Settings → Battery and Device Care → Battery → Battery Protection. If set to "Maximum protection (stop at 85%)," it will slow down once it approaches the limit.

Fix 6: Restart the Phone

A simple restart can reset the charging protocol handshake.

If you're still seeing Samsung Galaxy slow charging, the issue may be a worn charging port — Samsung Service Center can diagnose this.

Dr.Fone Tip: Use Dr.Fone – System Repair to fix Samsung charging speed issues caused by system-level software glitches.