Question about Acer Aspire L100 PC Desktop

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How to I change the battery on my acer aspireL100

The clock on my acer aspire is only working sporadically. I assume its the battery but I don't know how to change it. Can anyone tell me what to do please?

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  • Lassie21 Sep 19, 2008

    Well, my machine is a desktop not a laptop (aspire L100) so much of the above doesn't help. I reallly wanted to know if I take it into a shop or whether I can do it myself. I guess my request wasn't clear enough.

    Thanks for trying.


  • Lassie21 Sep 19, 2008

    Aha, thats getting closer - how do I get to it - do I unscrew the box ? Thanks so much for your help.

  • Lassie21 Sep 20, 2008

    Fantastic. Now I know what I need to know to change my battery. I am very grateful. This is a brilliant system and I will certainly use it again. Thanks for your help.


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First, ensure that your power adaptor is consistantly powering your system and watch for intermittant operation with the adaptors green light. (This rules out cord breaks for shorts)

Second, all laptops have a removable battery: You can find a replacement at

Laptop batteires serve to power your CMOS (Carbon Metal Oxide Semiconductor) on your laptop, and keeps your internal BIOS clock accurate. On Desktops, it's a lithium battery on the mainboard.

Also, check to ensure that you do not have a battery recall on the unit as well, as you may be able to get a free replacement.

If your clock is off by a few minutes, change time servers in the windows clock option. Just double click the time on the task bar, click internet time, and you can this one if you don't have it listed: Some are overloaded due to requests. That should keep you with arc seconds on the actual usno time clock.

Good luck.

Good luck.

Posted on Sep 16, 2008

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  • dgtechman Sep 19, 2008

    Ohhh, it's a desktop. My bad. It sounds like all you would have to do then is to replace the Lithium battery that's on the main board. Usually it's a walgreens cr2032 watch battery. Offtentimes what happens is that the boards sit in warehouses for a while even after being shipped from china and the batteries which gives the batteries time to drain down. Just pull it out and replace it with a new one. Fingers crosssed it's not soldered to the mainboard. =)

  • dgtechman Sep 19, 2008

    There's usually 3 screws holding the side panel on. Just remove them and slide the left side back and off. (left if you're facing the computer). Be carefull about static electricity (the type that gets you when you walk accross a shag rug in the wintertime and touch a door knob) try to avoid touching chips and memory. All the current that runs through a mainboard is DC and not AC. But DO unplug your computer before you open the case! =)

  • michaelskeet Sep 02, 2011

    I have an Acer L100 mini tower unit in which the bios battery ran out. So to replace it without any available manual I had to carefully remove the top/side panel by undoing the single chrome headed screw holding the top/side panel and sliding the panel rearwards exposing the inside top drives plate over the motherboard. I then discovered 3 black painted philips head screws at the rear of the assembly holding the drives in place which covered the motherboard and concealed the internal components. Having removed the 3 screws and unclipped the plastic tabs holding the front panel in place, I was able to gently prise the drives section from the motherboard (taking care not to strain the ribbon cable connecting the drives assembly to the mother board) and then gained access to the bios (cr2032 watch battery) after replacing this with a new item I then carefully reassembled the unit and all systems functioned normally.


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