Here's my full commuting set up for what it's worth
I have a similar set up but with cheaper lights and a mobile phone holder adapted by connecting a car windscreen suction holder to a handlebar reflector mount. I wear a work supplied Hi Viz vest over my tee shirt to complete the look (I have a hi viz jacket but it's too bloody warm to wear it at the moment).
When I was commuting in London (over 20 years ago), I only had lights to make me road legal and there wasn't one stretch where I actually needed them to see where I was going. This business of riding in the pitch black is brand new to me and yesterday I discovered one of the disadvantages.
As I rode down the lanes alongside the hedgerows, my lights became a magnet for every insect within a hundred yards of me. I arrived at work with my sweaty face full of gnats and tiny moths. Hopefully, it's just the time of year (with it still being relatively warm etc.)?
Yesterday afternoon (5pm) I had to use the lights on the way home because a pea soup of a Devon mist came rolling in off the sea about ten minutes into my commute and visibility was down to about 30 yards. All in, the rechargeable lights were on full power for 1 hour 50 minutes yesterday and were still showing nearly full charge when I got home which I think is pretty good. I'll have to see what they are like in two or three months time.