Introduction: Proof That a Netbook or Laptop Can Be Used Without the Internal Li-ion Battery!

Picture of Proof That a Netbook or Laptop Can Be Used Without the Internal Li-ion Battery!

There are rare cases where a netbook or laptop needs to be on continuously where it is performing a task or group of tasks. Ideally a desktop PC is great for this but where space is at a premium and power consumption has to be very low then a netbook is a good alternative. In my case I needed a touchscreen interface and the Dell Inspiron 3147 made a cost effective solution for an embedded pc.

The OEM batteries with portable computers do not last long in high heat areas. I live in a hot climate and I do not want rapid failure of the battery which may in turn cause permanent damage of the motherboard. My intent is to have this machine as a car automation pc. I don't want the heat of the day to compromise the integrity of the system.

This instructable applies only to portable computers with an internal bios or cmos battery. This is a lithium coin cell. Lower cost netbooks rely on the main Li-ion battery for bios and therefore their battery must not be removed!

Step 1: Removing the Battery.

Picture of Removing the Battery.

Depending on the model of the portable computer, there is a specific way to remove the internal battery. For my netbook, this is how I did it:

https://www.instructables.com/id/Removing-the-Battery-of-a-Dell-Inspiron-3147/

Step 2: Powering Up the Netbook or Laptop.

Picture of Powering Up the Netbook or Laptop.

You can use the OEM AC charger adapter to power the computer or in my case, I used plain old 12Volt DC from a battery. Even though the OEM adapters give approximately 19Volt DC, any netbook will run on 12Volt (laptops may not accept the lower voltage due to higher power demand). I actually successfully ran my netbook off 9Volt as a side experiment!

This proves that if you need a dedicated (and preferably touchscreen) PC to run 24/7, it can be done in a cost effective way using an off the shelf netbook or laptop! The reliability of the DC power source to the computer will of course determine its continued service availability.

Comments

AndieP (author)2016-02-16

we always take the batteries out of our laptops when on mains power. never had a problem unless you get a power cut on unplug it by mistake. Then its a nightmare. :-/

Mjtrinihobby (author)AndieP2016-02-16

so tru!

stephan2307 (author)2016-01-22

while this works with your laptop, there are some laptops that require a battery to be present in order to turn on.

Mjtrinihobby (author)stephan23072016-01-22

Actually no. Once the AC adapter is plugged into the portable computer, it will boot when the power button is pressed. Only windows may complain about a missing battery. A clear exception are the low cost netbooks/tablets that do not have a bios battery and will power on with bios error messages. My custom made Windows is heavily modified to work in an embedded system.

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Bio: As of April 2017 I have decided to no longer post on instructables. The fact that several of my published works have been removed without ... More »
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