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Discussion Sentiment

75% Positive

Analyzed from 285 words in the discussion.

Trending Topics

#charging#efficiency#battery#charge#home#plug#overnight#lost#losses#https

Discussion (10 Comments)Read Original on HackerNews

cromka•about 2 hours ago
“and claims a charging rate of up to 11 kW and with an efficiency of about 90% for easy overnight charging.”

That’s a some 9kW lost on a 80kW battery. I get the convenience, but I think the best use for those would be when standardized and installed in public parking spots, for a brief charge bump, not to charge fully at home, e.g overnight, which is what Porsche aims for.

cisc•36 minutes ago
> That’s a some 9kW lost on a 80kW battery

It's about the same as wired AC charging. There are always charging losses:

https://insideevs.com/features/711659/ev-charger-efficiency-...

onetwentythree•10 minutes ago
The 90% efficiency of the wireless transmission would be on top of the efficiency of typical charging (which is mostly losses after the power reaches the vehicle).
cisc•3 minutes ago
It's 90% from grid to battery.
pornel•about 2 hours ago
Charging at home is already more convenient and quicker (in human time) than driving to a gas station, and now they're optimizing the 30 seconds it takes to plug the car in.
GuestFAUniverse•33 minutes ago
I agree in so far that plug-in charging shouldn't be an issue for most people.

Yet I can see the advantages for someone with a disability.

And what a lot don't seem to understand: at 11kW we aren't talking about high charging efficiency anyway. Meaning, you cannot assume close to 100% for cable based charging and talk about how much 90% loose on a full battery (like others here do).

kova12•14 minutes ago
It's not just that; there's a new capability unlocked. You can now have self driving cars charge at remote places and come back without human interaction. Imagine you live in a place with no grid power
kotaKat•about 2 hours ago
And the funny thing is China's already picked up the dropped torches elsewhere; Xiaomi's going to be launching a robotic arm for your garage by the end of this year to plug in for you. Tesla gave up on their charging tentacle, but, wellp.

https://carnewschina.com/2026/06/13/xiaomi-unveils-home-char...

BoingBoomTschak•about 1 hour ago
Wall-E future here we come. Soon the people loader that lifts you from your sofa and plops you into the seat!
metalman•about 2 hours ago
the imaculate lifestyle aproaches, but then in the way of reality, will then prove to be just out of reach, with some new more minor and tedious 'inconvienience' taking on the roll of 'proof' in bieng a victim.