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I have a Dell Latitude E7490, and I want to turn on some kind of battery conservation mode. In particular, if the battery is, say, at 100% and I unplug it for a few mins, and the charge drops to 95%, I don't want it to charge back up to 100% when I plug it back in.

It appears that dell has a "longevity mode" for this, from a utility called "Dell QuickSet". However, this doesn't appear to be available for my model -- and on the Dell website, the screenshot is from XP, which isn't encouraging!

Such an application is very useful -- I had a Lenovo laptop prior to this, and it would only charge up to 60%, and not charge if above 50%, when "conservation mode" was on. I used this almost the whole time, as most of the time I Have my laptop on AC power. However, sometimes I go on quite long journeys, and it's helpful not to have to use the power cable, so I still want a long lasting battery

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  • Any thoughts, anyone? :)
    – Sam OT
    Commented Mar 6, 2019 at 10:13

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I think you can find revelant configuration option in the System Setup (press F2 after starting the laptop).

In Power Management screen there should be a section titled Primary Battery Charge Configuration. There you’ll probably want to choose Primarily AC use or Custom.

This can also be done via Dell Command | Power Manager, which is a Dell app that can be downloaded directly or from the Windows store. This allows the above settings to be changed without restarting the machine; further settings are also available.

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  • That's superb, thank you so much! Upon searching for more details for what "primary battery charge" actually does, I found that there's actually a thing called "Dell Command | Power Manager" which one can install (eg from the Windows store). This means that I can change exactly the settings you describe, but without having to load System Setup. I just edited your answer to add these links, hope that's ok! (Ok, the edit is still in peer review)
    – Sam OT
    Commented Mar 21, 2019 at 10:22

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