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A device that could pause and resume laptop charging at specific battery level set by the user.

Former Member

Hello

 

This is my first post.

I just registered on this site to suggest this idea of mine. I am not sure whether its already been mentioned or not so please bear with me...

 

I was hoping if there could be a device that could automatically stop the battery charging process of laptop once it reaches 99% and once the battery level goes down about 10% it resumes the charging. I have thought of this myself of how to accomplish this. There could be some driver software that could monitor the battery levels using the api, and that driver software controls some external device that could turn on and off the power supply of the laptop.

I hope you must have got the idea about what i am trying to say here...

 

The purpose of making this is simple, laptop batteries shouldn't be overcharged, it only decreases its backup time and efficiency. My laptop runs mostly all the time. At first i tried it by simply removing the battery and run it all on AC power, but there are power cuts here and i cannot afford my laptop to turn of directly. so the basic idea is that i make something like this to solve the issue. So i am asking again is this possible to build a device like this????

 

Regards!!!

  • Most laptops already have this. Its called a charge controller.  I think its been in use for the last 8 or 9 years. Reason allot of laptops are using batteries that if overcharge will either catch fire or explode.

  • A discussion on a similar question occurred a while back.

    I've seen people even remove their laptop battery while running from mains power, but it's unnecessary - the internal charger will stop charging when it knows the battery is charged. If it didn't, the battery would explode.

  • Yeah i know about that functionality but once the battery drops to 99% it starts charging again, this system never lets it discharge. A battery should be and needs to be discharge and recharge on regular basic from 15 to 90% for its long life. If it never goes down below 99% then what good it be for? All that's gonna do is decrease its backup time.  Also as i said earlier i already tried removing the battery and running it only on AC power but when power goes out its a bother. I use this laptop as server for many machines, so i cannot turn it off in any case. I need to keep it running.

    That charge controller is a good thing, but it needs to be more advanced, what i want is to pause the charger from charging the laptop until the certain level of battery has been reached, lets say charging should stop once battery has been charged about 95% or user defined and charging should only resume once battery goes below 15% or user defined.

  • in reply to Former Member

    I get what you are saying but you mistake what has been said. Modern batteries do not need to be discharge constantly to keep it healthy In Bios there is a program that checks the Battery health and battery level.  It maintains the battery at its highest level to maintain the battery's health. Every time the battery discharges it takes a bit more electricity to charge it, not much at first but overtime it gets higher and the battery health goes down. The built in charge controller maintains the battery's health for the longest time. What you are suggesting would kill the battery quicker and really serves no good use.. You talk about power failures happening and a battery at 99% charge will run longer than a battery charged only 30%. If I was running a server (and I do using one of my Raspberry Pi and a uninterrupted power supply with a 12 hour charge) I want the server to stay up long enough to power is returned and again can charge the battery instead of taking the chance of my server going down.