Xiaomi Mi 10 Ultra charging test disputes 120 W claim but it can still go from 0 to 100% charge in a hot 21 minutes

[Redaktion]

The Xiaomi Mi 10 Ultra has been put through a series of charging tests and has come up short with the promise of 120 W fast charging. The Mi 10 Ultra did manage to refill its battery from 0 to 100% in just 21 minutes, but this came at the cost of some soaring temperatures.

https://www.notebookcheck.net/Xiaomi-Mi-10-Ultra-charging-test-disputes-120-W-claim-but-it-can-still-go-from-0-to-100-charge-in-a-hot-21-minutes.501585.0.html

[heffeque]

Still prefer to charge at 18W... for the battery lifetime's sake.

[Raff]

Why not using 0.1w charger it will be even better for the battery.

[Kacper]

If you look closely at the charger's characteristics, you'll notice that it's not possible to achieve 120W from a 110V outlet, it maxes out at 96W. 230V would allow to get much closer to the advertised power.

[_MT_]

Why not using 0.1w charger it will be even better for the battery.

What are you disputing? That heat can accelerate irreversible chemical reactions? Or what?

Actually, you can't go too slow either. Especially for the smaller galvanic cells (around 3 Ah), even 18 W is fairly ambitious. You're well over the recommended charging currents. This is especially worrying if you're charging every day. The more you abuse a cell, the more you're relying on a manufacturer doing the right thing and paying for a cell that can take it. This is not just about money, but also about weight, size and capacity. I suspect most phones didn't ship with a fast charger at least partly because the cells were actually not rated using a fast charger. It gives them more legal wiggle room. Which might be interesting if they glue the thing up and can't use a shorter warranty for consumables. Normally, a 6 month warranty on a cell itself would cover their asses pretty well against silly users who think they can have their cake and eat it, too.