Why is my wireless charger so slow?
The short answer
Your wireless charger is slow because your phone isn’t properly aligned, you’re using a low-wattage charger, or something is blocking the connection.
Most common causes
1. Your phone isn’t centered on the pad
Wireless charging uses magnetic coils that need to line up between your phone and the charger. If your phone is even slightly off-center, charging speed drops significantly or barely works at all.
2. Your case is too thick
Most wireless chargers work fine through thin cases, but thick, rugged, or metal cases block the signal. Anything with a metal plate (like a magnetic car mount attachment) will interfere with charging.
3. Your charger has low wattage
Basic wireless chargers top out at 5 watts — roughly half the speed of a standard wired charger. Your phone might support 15W or faster wireless charging, but the charger itself needs to match that speed.
4. The wall adapter is underpowered
Even a fast wireless charger can only charge as fast as the power brick feeding it. If you’re using an old 5V/1A adapter, your charger can’t deliver its full speed. Most fast wireless chargers need at least an 18W or 20W adapter.
5. Your phone is hot
Phones automatically slow down charging when they overheat to protect the battery. Charging in direct sunlight, while gaming, or with a heavy case traps heat and triggers this throttling.
How to fix it
- Center your phone on the charging pad — look for a sweet spot where the charging indicator appears quickly
- Remove thick or metal cases before placing your phone on the charger
- Upgrade your charger to one that supports 10W or 15W wireless charging
- Use the right wall adapter — check your charger’s specs and match or exceed the recommended wattage
- Keep your phone cool — avoid charging in warm spots or while running heavy apps
- Clean the charger surface — dust or debris can create a gap that weakens the connection
When should you worry?
If your phone charges slowly on every wireless charger and also charges slowly with a cable, the issue might be your phone’s battery. Degraded batteries charge slower over time. Check your battery health in your phone’s settings — if it’s below 80%, a battery replacement will help.
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