What version of browser is the best one for PP ?

Right now i'm running the 10.3.2.31 version, but lately all of the browser versions have a tendency to drain my battery ( i believe since 10.3.1...can't say for sure though ) whereas older versions of the browser ( when i first bought it ) didn't create this problem for me. Either it keep refreshing when i don't want it to, or something like that. What version of the browser is best for you guys? Let's say i go to sleep with my internet browser open, couple of tabs, i'd wake up to a drained PP, with the browser taking in about 50-60% of the battery usage.

Have you checked to see which apps are actually using the most power by looking at the Device Monitor? The power used over night probably depends more on the particular web pages that are left open than which browser is used. Ads on a web pages which is constantly refreshing are likely to consume more power than a static web page.

It's always the browser that draws the most power @ device monitor. Display 15-20% behind it, but browser is always 40-65%. I can understand that ads on a web page can be refreshed, but it should be possible to have the browser not refresh all the time when idle.