Did you look at reviews of that there HP ProBook 445 G7 14", to see if they tested/verified any battery life data?
In this (lengthy) review, they talk about the battery life.
https://www.notebookcheck.net/HP-Pr...view-Moving-forward-with-Renoir.483145.0.html
Back in 2012, I got my first long-battery-life laptop. And it COULD indeed operate for 10 hours on batteries only. It used one of the first low-power specific Intel CPUs
But the very long battery-power-option was all due to trimmed down performance settings, when being battery-powered-only.
If I wanted to see the screen in outside daylight, then I needed to adjust the display settings (and thus use more power) and accept a shorter timeframe for battery-only-operation.
Likewise, the default fan setting (under battery operation), was set to OFF. So when ever the CPU got too hot, it would simply pause (and freeze operations for some 3-5 seconds). That got annoying very fast.
Now, CPUs have changed significantly, since 2012, so I am sure that they can now run quite well, on very low power consumption.
But I would still expect that a very long battery-operation-option, still depends on optimizing every setting in windows, for quite low power consumption.
Fortunately those settings are highly user-adjustable, so if one finds one of those optimized power settings too annoying, one can simply change that one setting.
How will you use the laptop?
If it will only be light use, like primarily internet browsing, and a few youtube videos, then I would expect that any advertised time duration for battery operation is very possible.
I noticed that the review had a mention about single-channel vs. dual-channel RAM, when talking about the display/graphics performance.
So it seems that the
[font=Tahoma, Verdana, Arial, sans-serif]HP ProBook 445 G7 14" laptop, has a few hardware configuration options, that might be worth looking into, when ordering the laptop. So it can be optimized for low-cost, or with specific extras in the area that will see its main use. [/font]