Thread: Kobo Libra H2O Clears the FCC
View Single Post
Old 08-30-2019, 09:09 AM   #64
theducks
Well trained by Cats
theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.
 
theducks's Avatar
 
Posts: 31,153
Karma: 60406498
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
Quote:
Originally Posted by rkomar View Post
Is it really down to the connector? I thought charging time was mostly limited by not wanting to overheat the battery (and thus shorten its life). I wonder if new batteries are less vulnerable that way?
The battery charge circuit protects the battery. You can plug the cable into a 2A 'charge' port without worry. The circuit will only draw what the battery can take at the time. The OFFICIAL USBa port on the PC end is limited to 500mA (1/2A), period. Then it shuts off.
What got attached evolved (and got way more complex and folk not wanting to use external power modules to use the device) and became power hungry. USBc is the answer to higher 5V current

FWIW There was a older system used mostly by the Retail POS trade that had a extra section above the USB port (green was 5V and 12V for displays and CC terminals. red was 24V for printers ). https://en.wikipedia.org/wiki/PoweredUSB
A few high end user systems offered this for external HD and similar.
theducks is offline   Reply With Quote