iOS 18 iPhone Battery Level Graph

The Slow Charger warning indeed is new to iOS 18, so you should probably use a higher Watt charger.

According to Apple, you need a 20W or higher power adapter to fast charge your iPhone 12 and later.

The orange on your charging history represents you were using a slow charger to charge your iPhone. Ensure that you’re using a charger sufficient enough for charging your iPhone.

Here's what the other colors on your iPhone charging history represents:

Green ⇢ iPhone battery above 20%

Red ⇢ iPhone battery below 20%

Yellow ⇢ Low Power Mode

Orange ⇢ Slow Charger

Lawrence Finch wrote:

Zachyy wrote:

The orange represents that you were using a slow charger to charge your iPhone, if that is what you’re asking.

It won’t do any harm to use a slow charger, and some people think it’s better for the battery. To fast charge you need a 20 Watt or higher USB-C/PD power source directly connected, or a Mag Safe charger plugged into a 30 watt or higher power source.

Good to know Lawrence!

I'm not sure why people are saying you now should use a higher watt charger.

If there was a problem, then maybe. If it is just that now the graph in iOS18 has a different colour there is nothing to change.

If like me you are using the charger you have, it is within spec and working there is no reason you have to get a higher watt charger.

Slow charging does not hurt your phone. It's not as quick, and may not be optimal for a number of reasons, but if it works for you then keep using it.

I'm here because I was wondering why my iPhone 15ProMax has just started showing the Amber colour in charging graph. Now I know it is "slow charging" then nothing to worry about.

Zachyy wrote:

The orange represents that you were using a slow charger to charge your iPhone, if that is what you’re asking.

It won’t do any harm to use a slow charger, and some people think it’s better for the battery. To fast charge you need a 20 Watt or higher USB-C/PD power source directly connected, or a Mag Safe charger plugged into a 30 watt or higher power source.

The orange part of the graph indicates your phone was charging via a "slow" charger.

Michael Gerbes wrote:

So what does this mean?

https://discussions.apple.com/content/attachment/d04e277c-52c7-4e2b-ac85-9803de97d88f

The orange represents that you were using a slow charger to charge your iPhone, if that is what you’re asking.

It’s the slow charging indicator. True Tone and other settings might change the appearance.,

Since there is a charging symbol of the same color, the picture would logically indicate that the charger was plugged in to the phone during this time.

Then you should try using a higher Watt charger.

elddum wrote:

If like me you are using the charger you have, it is within spec and working there is no reason you have to get a higher watt charger.

Correct.

Li Ion (Lithium Ion) batteries have recharging capabilities; however there are limits.

I recommend to slow charge your iPhone to maximize the charge capacity.

NOTE:

Capacity loss in standby applications is largely determined by temperature.

Charge above -30°C and discharge below 55°C for best results.

Slow charging does not hurt your phone. It's not as quick, and may not be optimal for a number of reasons, but if it works for you then keep using it.

Slow charging is very good for maximizing battery health and efficiency. ⚡️🔋

Good luck! 👋🏼😉

Read a little about how electricity works. Learn what watts, volts and amps are. Learn a little about resistance and learn about how devices draw current. Things start to make sense. It’s all good. 😀😀

IdrisSeabright wrote:

Michael Gerbes wrote:

It looks red to me. Not orange.

The color it appears to be will depend on the settings of your phone and the wallpaper color. It's the microphone indicator.

My apologies. I thought I was responding to a different thread.....

Jeff Donald wrote:

Read a little about how electricity works. Learn what watts, volts and amps are. Learn a little about resistance and learn about how devices draw current. Things start to make sense. It’s all good. 😀😀

Thank you Jeff!