I bought 3 Roku Streaming Stick+ (3810X) a month ago. They are all running 9.4.0 build 4200-50. Two of the three remotes won’t even last a week before they need new batteries. Those two Rokus were only used for a couple days and the TVs they’re plugged into were powered off all the rest of the time. The 3rd Roku gets used every day. Strangely, the batteries in that remote are still at 60%.
The only difference between these Rokus is that the 3rd Roku stick gets its power directly from a wall outlet while the other two sticks get their power from the TV’s USB port so they lose power when the TV is turned off.
It makes me wonder if powering the sticks via the TV’s USB port somehow causes the batteries in the remotes to drain much more quickly than when the sticks are powered by the wall outlet. Perhaps the batteries are drained as the remotes keep trying to find the Roku sticks when they lose power. I’m going to try powering all of my sticks via a wall outlet and see if that helps make the remote batteries last longer.