Acer: CMOS Battery

 

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Q: How does one check CMOS battery specs for Acer?
A: As shown in the video..
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Applications: Troubleshooting, Sales & Service
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Relevant Background: "The memory battery (aka motherboard, CMOS, real-time clock (RTC), clock battery)[4][5] is generally a CR2032 lithium coin cell. This cell battery has an estimated life of 3 years when power supply unit (PSU) is unplugged or when the PSU power switch is turned off.[6][7] This battery type, contrary to popular belief, is not rechargeable and trying to do so may result in an explosion. Motherboards have circuitry preventing batteries from being charged and discharged when a motherboard is powered on. Other common battery cell types can last significantly longer or shorter periods, such as the smaller CR2016 which will generally last about 40% less time than CR2032. Higher temperatures and longer power-off time will shorten battery cell life. When replacing the battery cell, the system time and CMOS BIOS settings may revert to default values. Unwanted BIOS reset may be avoided by replacing the battery cell with the PSU power switch turned on and plugged into an electric wall socket. On ATX motherboards, the PSU will supply 5V standby power to the motherboard to keep CMOS memory energized while the system is off...Some computer designs have used non-button cell batteries, such as the cylindrical "1/2 AA" used in the Power Mac G4 as well as some older IBM PC compatibles, or a 3-cell NiCd CMOS battery that looks like a "barrel" (common in Amiga and older IBM PC compatibles), which serves the same purpose. These motherboards often have a four pin straight header, with pin two missing, to connect an external 3.6v battery, such as the Tadiran TL-5242/W, when their soldered on batteries die... " ("Nonvolatile BIOS Memory", https://en.wikipedia.org/wiki/Nonvolatile_BIOS_memory#CMOS_battery)

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Relevant material on CMOS battery: "Here are some tell-tale signs that your battery is dying: Invalid configuration will appear on your screen. Run Setup appears on your screen. Invalid drive specification appears on the screen after you've pressed F1. Press F1 to continue appears on your screen. Clock Error or Clock Message appears on your screen. The computer is constantly showing the wrong date.The clock on the computer loses time." ("How to Know when Your Computer Battery is Dead" , https://computer.howstuffworks.com/how-to-know-when-computer-battery-is-dead.htm)
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Relevant Insurance Coverage for Consumer Electronics, Office & Gaming Equipment :
a) Personal Property Coverage that covers all electronics from perils like theft
b) Business equipment and Data Coverage
c) Auto Insurance: OPCF 38 - Agreed limit for automobile Electronic Accessories and Equipment
d) Commercial equipment coverage that covers computers, photo copiers and other electronics

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Location: Canada

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