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MRISX

macrumors member
Original poster
Oct 2, 2016
56
18
Hi, I have a 5w brick from my phone and a 10w that came with my air 3. Almost every time I choose the smaller one to charge the iPad too since I’ve heard a longer but smaller charge power is preferable to avoid issues with the battery. But being these 2 bricks reasonable small, it makes any difference?

initially I also did this since I thought the white spots might be related to temp, but I think that was never confirmed.

thanks!
 

rui no onna

Contributor
Oct 25, 2013
14,921
13,273
Yeah, pretty big difference. The 5W will probably take 8 hours to fully charge while the 10W 4 hours. If you normally charge overnight, better to use the 5W so the battery doesn't stay at 100% for long.
 

MRISX

macrumors member
Original poster
Oct 2, 2016
56
18
Yeah, pretty big difference. The 5W will probably take 8 hours to fully charge while the 10W 4 hours. If you normally charge overnight, better to use the 5W so the battery doesn't stay at 100% for long.
The pretty big difference is in chagrin time (which I kind of noticed ahah) or battery life? The questions was more around battery health
 

rui no onna

Contributor
Oct 25, 2013
14,921
13,273
The pretty big difference is in chagrin time (which I kind of noticed ahah) or battery life? The questions was more around battery health

Depends on how long you normally keep the device plugged in. As mentioned, for overnight charging 5W is gentler on the battery. With the 10W charger, the battery stays at 100% longer which isn't ideal for battery health.

If you're only doing short, quick top ups during the day then 10W is fine. I actually use USB PD 30W for 15-30 minute charges.
 
Last edited:

MRISX

macrumors member
Original poster
Oct 2, 2016
56
18
And for long periods of use during the day, you leave it on battery or plugged in like a laptop? I would imagine at 100% it should stop the charging, I am wrong?
 

rui no onna

Contributor
Oct 25, 2013
14,921
13,273
And for long periods of use during the day, you leave it on battery or plugged in like a laptop? I would imagine at 100% it should stop the charging, I am wrong?

I recently setup a Smart Plug + Shortcuts Automation to manage charging my iPad so battery stays between 50-80%. Before that, I was manually plugging and unplugging to try to keep the battery within that range.

It does stop charging at 100% but if it drops a little, it starts charging again so the battery mostly stays at 98-100% so not ideal.
 

AutomaticApple

Suspended
Nov 28, 2018
7,401
3,378
Massachusetts
Hi, I have a 5w brick from my phone and a 10w that came with my air 3. Almost every time I choose the smaller one to charge the iPad too since I’ve heard a longer but smaller charge power is preferable to avoid issues with the battery. But being these 2 bricks reasonable small, it makes any difference?

initially I also did this since I thought the white spots might be related to temp, but I think that was never confirmed.

thanks!
Honestly, I just charge my iPad Pro with the power adapter that came with it.
 
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