22
modern laptops are like 8w right? it's probably a few orders of magnitude lower than the power consumption of your appliances
The converter says "Output: 65W" So it would be something, and a good place to start as the battery is there anyway and is plugged in all the time too, anyway.
I don't know but is that power actually worth more than battery cycles due to discharging and recharging?
Some laptop battery firmware allows you to force discharge even when connected to AC, and if your laptop can use the tlp recalibrate or tlp discharge commands then yours is supported.
I use this to power my thinkpad servers off of their own batteries during a power outage, to reduce load on my UPS. Great feature.
Interesting setup. How would you tell your Thinkpads if there's a power outage?
I've got a 2021 Dell laptop. In uefi, you can set charge times and type of charge, 50%,80%, full, and smart. I think it's in like 1/2 hour blocks by day. By that I mean on (day of week) from 9:30am to 6:00pm charge full, different day may have different settings. .
@Intheflsun @Floopquist What I meant is that I do not think you can have it discharge the battery when AC is present without altering the PD chips firmware.
Well, you will have excess solar power during the day, so just keep it plugged in to the solar while solar is available. Then, just unplug the laptop in the evening until you get to 15-20%.
Trying to force the laptop to discharge while plugged in is colossally more trouble than it's worth.
Unplugging by hand is a bad solution. I want to have this even when I am not at home, it has to be automated.
Sounds like a smart socket might do what you need, externally, with some coding.
Thank you, I like the idea. Will research in this way.
this post was submitted on 14 May 2025
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