Need help Identifying rechargeable BIOS battery type for Acer Aspire ES1-523

OldDave
OldDave Member Posts: 3 New User
edited 5:32AM in Aspire Laptops

I believe I need to replace the BIOS battery in a couple of Acer laptops. Orange light flashes about once per second. Measured 0v initially and charged slowly to above 1v overnight. Battery is soldered to the back of the motherboard. Unsoldered it and read the writing on the down side. Says rechargeable. Soldered it back into place. Bought this one secondhand and as not working. Repair and reuse is the best bit of recycling :-) . I have another unit with the same issue and the battery is swelling slightly.

Can anyone tell me what type of battery I should replace it with please?

Thanks, newbie Dave

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Answers

  • StevenGen
    StevenGen ACE Posts: 14,228 Trailblazer
    edited May 21

    These are the Acer listed batteries for the Aspire ES1-523 model. Good luck and hope this helps you out, but try to get a non copy genuine Acer battery if you can still get them, as the copy batteries are not of good quality.

    ES1-523 Acer listed oem batteries.

    image.png

    ES1-523 CMOS Battery that is a CR2032 type battery and its not soldered onto the board.

    image.png

    If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍

  • OldDave
    OldDave Member Posts: 3 New User

    The table above is for the main battery. I have 2 similar Acer mobo's with soldered CMOS batteries as in the pic. B5W1E (ES1-521) and a C5W1R (ES1-533) both of which test 0v across the 2 pins. Charging them overnight makes very little difference. Batteries are physically smaller than the regular CR2032 button battery. If I can't find a replacement can I just cut it out and solder in a CR22032 with wires on it? Thanks, Dave

  • StevenGen
    StevenGen ACE Posts: 14,228 Trailblazer
    Answer ✓

    Yes, you can do that as the bios needs 3 volts to operate and it doesn't matter how the bios chip gets its power as long as it gets the 3 volts.

    If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍

  • OldDave
    OldDave Member Posts: 3 New User

    Removed the battery from mobo. Can't replace a rechargeable with a normal button battery. Overheating risk.

    Ordered a couple online but might take a month. :-( Will see what is available locally. One step at a time.

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