We have 3 Roku TVs in our house and there are no problems with their batteries for their remotes. However, our new ROKU TV remote drains batteries DAILY!! I am on my second set just today! I am not liking have to $20 for a pack of AAA batteries every week. I think something needs to be done by the company to replace such a horrible product (remote).
Thanks for letting us know about the issue you're experiencing.
Please be advised that remotes for Roku TVs are manufactured directly by the TV manufacturer. We would recommend reaching out to the TV manufacturer's customer support team to report the issue and get help.