High battery consumption can come from several sources, so I’d first check which applications or processes are using the most power. Running a virtual machine can increase CPU activity, disk usage, and background processes, which may contribute to faster battery drain. Lowering the virtual machine’s allocated CPU and RAM when they aren’t needed can help. Also check display brightness, background applications, power settings, and whether the host system is performing unnecessary tasks. Keeping Parallels and the guest operating system updated may also help with power management. Comparing battery usage with the virtual machine stopped can give you a useful baseline.
