Thread: What am I doing to make my Kobo Clara HD battery drain so fast?
View Single Post
Old 01-13-2021, 06:20 AM   #2
davidfor
Grand Sorcerer
davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.
 
Posts: 24,905
Karma: 47303824
Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
With that usage pattern, the most like reason is a "bad" book. Some books have something in them that uses more CPU and hence battery. And leaves a process running in the background using power. I don't think I have seen a good explanation of what is wrong in the book that does this. But it is apparent as people open a book and read, then close it and the power is used. They reboot the device and it is OK until they open that book. The solution can be doing an epub-to-epub conversion in calibre.

The power used also depends on how fast you read. The device effectively sleeps between pages and uses very little power. The faster your read and more often you turn the page, the more power is used.

I think what format you read also affects the power usage, but, I have never truly tested this. I'd expect a PDF to use more CPU, but, I can never devide if a comic book (CBR or CBZ) will be worse than an epub. The comic will probably be a larger file, but, I don't know which will use more power rendering each page.
davidfor is offline   Reply With Quote