I recently bought 2 x roku streaming soundbars, one for me, and one for my partner. One remote and system is fine, but the other is draining new batteries every day. Every. Single. Day.
Both remotes are model RC577, with the same firmware version rtn.4120. Both soundbars are also on the same software version -10.0.0 build 4209-95
Reading through other threads for other devices, its clear there is a known defect with the enhanced remotes.
Details of the system having an issue : 
