View Single Post
Old 07-30-2021, 07:20 PM   #58 (permalink)
JSH
AKA - Jason
 
JSH's Avatar
 
Join Date: May 2009
Location: PDX
Posts: 3,501

Adventure Seeker - '04 Chevy Astro - Campervan
90 day: 17.3 mpg (US)
Thanks: 309
Thanked 2,067 Times in 1,397 Posts
Quote:
Originally Posted by Isaac Zachary View Post
One thing about phone battery cooling is that the outer surface area to volume ratio is much greater making it cool much better without the need for external cooling.
My legs say otherwise when I try to stream full screen with my laptop on my lap. My phone gets physically hot to the touch when charging. Both are well outside of the optimal temperature range for Li-Ion batteries (60 to 95F)


Quote:
Originally Posted by Isaac Zachary View Post
Amp-hours are kind of a funny way to compare a single cell pile to a multi-cell battery. Watt-hours would seem to be a better metric. Same thing with current vs power.

The 2.94Ah iPhone cell has a nominal voltage of around 3.6V. So that's almost 10.6Wh.

The Model 3 Long Range battery is around 79,000Wh, or 7,464 times bigger.
kWh works too. Phone batteries usually have capacity in mAh while cars usually have kWh ratings. Easy enough to convert back and forth.

Last edited by JSH; 07-30-2021 at 07:31 PM..
  Reply With Quote