Thanks for the prompt reply...I would have replied sooner but I'm limited to one post per day. :-(
Read a few different threads from the link above, but no mention of what others have been able to achieve in power saving to benchmark myself from.
But from the link did see https://forum.armbian.com/profile/5364-paddlestroke/ asking sort of similar questions. Hence will reach out to him, subject to my quota allowance. :-(
Anyway if anyone else can shed some light on power conservation, welcome your feedback.
TIA!
Rob.