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_--TiTaN--_ t1_j4qt90p wrote

What was the temperature difference?

30C feels warm to the touch but it’s nothing for battery.

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EScootyrant t1_j4qtlyr wrote

Idk, it is always very warm with the 20W. Always. Worse if I use the wireless MagSafe puck.

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_--TiTaN--_ t1_j4quikg wrote

Yeah, with MagSafe 25% of energy is wasted as heat (takes 20 watt but delivering only 15 to phone). 20 watt is almost at limit how fast 13 can charge (22watt max I think), and 5 watt (5V at 1A) charger is super slow in comparison. That’s why in my original comment I said specifically that if you use that charger you’ll be good. How long does it take to fully charge? Must be 4h at minimum?

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