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Dkka1

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Original poster
Feb 28, 2019
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I'm trying to decide whether to buy the 20W charger for my new iPhone 12 mini but can't find any data. Do you know how long does it take to fully charge this device with the official 20w charger?
 
Apple said:
You need a 20W or higher power adapter to fast charge your iPhone 12.
The iPhone 11 Pro, for example, takes around 1 hour 45 minutes to charge from 0-100% when charged with an 18W fast charger. For iPhones that ship without a fast charger, the difference in overall charging speed will be greater, though it will still be slower than the charging speeds of most flagship Android phones. All iPhones that support fast charging will go from 0-50% in just 30 minutes. However, after that, the charging speed will drop dramatically and your iPhone will take almost another hour or around 75 minutes to charge to 100%.
 
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I'm trying to decide whether to buy the 20W charger for my new iPhone 12 mini but can't find any data. Do you know how long does it take to fully charge this device with the official 20w charger?
Well, you should never fully deplete your iPhone's battery as it will hurt the battery capacity in the long run. Not so much with a decent fast charger like the one you mentioned from Apple. I love that 20W charger, I've never been able to charge any smartphone that quickly, ever. 30 minutes and it goes from 30% charge to 80%. I'm very satisfied with that solution.
 
I'm trying to decide whether to buy the 20W charger for my new iPhone 12 mini but can't find any data. Do you know how long does it take to fully charge this device with the official 20w charger?
With my 5 watt charger, I gain almost 50% in 30 minutes on my Mini. Unless you have a need for a faster charge, I don't think anyone needs 20 watt chargers.
 
With my 5 watt charger, I gain almost 50% in 30 minutes on my Mini. Unless you have a need for a faster charge, I don't think anyone needs 20 watt chargers.
That’s certainly not my experience lol. With the 20W charger, yes, with 5W no way... Okay, I guess the 20W charger only takes around 20 mins to charge 50%. Still, it’s only $19 for the 20W charger, so I’d definitely get it.

 
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That’s certainly not my experience lol. With the 20W charger, yes, with 5W no way... Okay, I guess the 20W charger only takes around 20 mins to charge 50%. Still, it’s only $19 for the 20W charger, so I’d definitely get it.

I know no way it charges that fast. I have a 10w charger and it doesn’t charge my mini faster than that. I do have a usb-c PD fast charger and that works super fast.
 
20W is in android world slow charge ..and also people who are using 5W brick with their iphone 12’s line up should get a life its like buying ferrari and driving 50 because you dont want to wear up motor 🤦‍♀️...
It extends the battery life span. Used a iPhone 20W charger on my iPhone 11 Pro Max and it had 88% of battery capacity within a year.

iPhone 12 Pro Max running strong.

heat kills battery, fast charge also kills battery due to high voltage.
 
My mini charges around 1% per minute on my car charger I have had forever. I’m assuming it’s 5watts. Much faster than my iPhone 8. I originally was going to go with a quick charger, but don’t see the need.
 
It extends the battery life span. Used a iPhone 20W charger on my iPhone 11 Pro Max and it had 88% of battery capacity within a year.

iPhone 12 Pro Max running strong.

heat kills battery, fast charge also kills battery due to high voltage.

i personally just use my iPhone as I want it and if the battery life isn’t on par with my expectations anymore, I’ll just make an appointment at the applestore and get the battery replaced. If I can afford a 1,250 € iPhone, I can spent 69 bucks on a battery replacement
 
i personally just use my iPhone as I want it and if the battery life isn’t on par with my expectations anymore, I’ll just make an appointment at the applestore and get the battery replaced. If I can afford a 1,250 € iPhone, I can spent 69 bucks on a battery replacement
That and in a 2 year usage span, I've not seen a benefit between slow charging and charging at the rate the phone will accept. Maybe 3+ years? But in the 2 years I've been religiously watching my phones with coconut battery (hobby) - I haven't seen a benefit.

Most people here that I've seen get a new phone every year. They definitely won't see a benefit from a 5w charger other than stressing the 5w brick (heat) and taking forever to charge their phone.

The 12 Pro Max, from my observations, takes a LOT longer to charge from 90-100% than my 11 Pro Max and previous phones did. My guess is Apple implemented this to help battery longevity.

Now with the 12 Pro Max - my wife is charging with the Magsafe charger while I stay with normal cables. We'll see how that compares in a year/two!
 
That and in a 2 year usage span, I've not seen a benefit between slow charging and charging at the rate the phone will accept. Maybe 3+ years? But in the 2 years I've been religiously watching my phones with coconut battery (hobby) - I haven't seen a benefit.

Most people here that I've seen get a new phone every year. They definitely won't see a benefit from a 5w charger other than stressing the 5w brick (heat) and taking forever to charge their phone.

The 12 Pro Max, from my observations, takes a LOT longer to charge from 90-100% than my 11 Pro Max and previous phones did. My guess is Apple implemented this to help battery longevity.

Now with the 12 Pro Max - my wife is charging with the Magsafe charger while I stay with normal cables. We'll see how that compares in a year/two!
It’s been proven that 5W charger is better for the battery of the longer lifespan. It doesn’t generate heat internally as much a a a 20W charger 🔌

Below is the thread about similar issue. 5W is the breadwinner.

 
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It’s been proven that 5W charger is better for the battery of the longer lifespan. It doesn’t generate heat internally as much a a a 20W charger 🔌
You probably won't see the difference between a 5w charger and a 20w charger in a 1-2 year timeframe.


Better for your battery is to keep your charge level between 80% and 40%. Going above 80% and below 40% has far worse detrimental effects.
1609693855048.png
(Battery University) ---75-65% is even better (as well as 75-45%).

Yes, cooking your phone in the sun will harm the battery more but charging at 20w vs 5w won't have much of a difference over a 1 year to 2 year timeframe.

1609693732736.png
(Battery University)

My battery, charging on a 100w charger (USB C to Lightning via MacBook Pro) right now is at 23.2C.

Note that while charging, your battery is only at these elevated temperatures for short periods of time - the above graph is constantly kept at said temperature for the life of the battery. The diff between 0C and 25C is negligible (14%) - and that's a constant temperature. In real life, you're not going to see much of a difference unless you keep your phone for 3+ years.
 
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It’s been proven that 5W charger is better for the battery of the longer lifespan. It doesn’t generate heat internally as much a a a 20W charger 🔌

Below is the thread about similar issue. 5W is the breadwinner.

Don't get me wrong, 5w is great for your phone - every little bit helps. If you can stand the slow charging - it definitely helps.
 
is the new 20w faster than the older 29w (which I think has fewer overall voltage combo's) for iPhone 12 Pro ?
 
is 20w faster than 29w for iPhone 12 Pro ?
From what I can tell the phone will only ask for 20w max at a specific PD voltage. Assuming the 29w brick can supply that 20w voltage exactly the way the phone wants it -- they should be the same.
 
I pretty much charge it every night and leave it on a charger overnight. By the time I wake up it’s at 100%. Realistically slow charging is better and ideal.
Agreed. I have a 12 Pro Max and the 5w brick gets a little too warm for me trying to power my phone so I try to use the old 12w iPad bricks from the old days. Seems to work for me and still provide OK charging.

If I had a 12 Pro or 12 mini - 5w definitely.

If you keep your phone a long time - it'll help. And whoever you sell your phone to will be lucky to have it. :)
 
I pretty much charge it every night and leave it on a charger overnight. By the time I wake up it’s at 100%. Realistically slow charging is better and ideal.

there are trade offs to keeping the phone at 100-% too

I think 40-80 or 30-80 is the ideal range
For the battery to be kept at rather than constantly drained to 0 or plugged in at 100
 
there are trade offs to keeping the phone at 100-% too

I think 40-80 or 30-80 is the ideal range
For the battery to be kept at rather than constantly drained to 0 or plugged in at 100
Agreed. I've seen more of an effect from 40-80 than anything. So with my 12 Pro Max I'm actually doing this all the time now. Amazing how I adapt to it - I can almost always pull it off at 80% (or within a few %) without even thinking about it now. :p
 
there are trade offs to keeping the phone at 100-% too

I think 40-80 or 30-80 is the ideal range
For the battery to be kept at rather than constantly drained to 0 or plugged in at 100
I agree! But Optimized battery charging is activated so it doesn’t stay at 100% for too long :)
 

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You probably won't see the difference between a 5w charger and a 20w charger in a 1-2 year timeframe.


Better for your battery is to keep your charge level between 80% and 40%. Going above 80% and below 40% has far worse detrimental effects.
View attachment 1706062 (Battery University) ---75-65% is even better (as well as 75-45%).

Yes, cooking your phone in the sun will harm the battery more but charging at 20w vs 5w won't have much of a difference over a 1 year to 2 year timeframe.

View attachment 1706057 (Battery University)

My battery, charging on a 100w charger (USB C to Lightning via MacBook Pro) right now is at 23.2C.

Note that while charging, your battery is only at these elevated temperatures for short periods of time - the above graph is constantly kept at said temperature for the life of the battery. The diff between 0C and 25C is negligible (14%) - and that's a constant temperature. In real life, you're not going to see much of a difference unless you keep your phone for 3+ years.
Indeed, it’s about duration with some exceptions e.g. a battery at 450°F/232°C or a true 0% charge will incur severe damage, perhaps to the point of unusable. Always at 50% is optimal.

Basically, the bigger deviation, lower or higher, from 50% charge and ~55°F/12°C at longer and longer durations the greater the cell degradation. Essentially, what’s depicted in the table.
 
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