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Electronic Theatre Controls Inc

What Happens When I Remove the BIOS (CMOS) Battery?


My console is being transported via air and the BIOS (CMOS) battery must be removed during transport. 


The BIOS (CMOS) battery stores persistent memory for BIOS and the Date/Time/Location settings for your console. Removing this battery and putting it back in will cause these features to reset to defaults. Unless otherwise altered by an end user, the BIOS settings on your console are also the default settings. 

The BIOS (CMOS) battery does not store data for the Show File Archive, however it is highly recommended that the Show File Archive is backed up onto an external drive before the console is transported.  

Replacement Battery

New BIOS (CMOS) batteries can be purchased at your local hardware store.

Please check your console and purchase the appropriate style of replacement battery.


Early models


Later models

CR2032 CR2032W

n.b. connector orientation

Which battery do I need for my Ion?

We recommend checking, as changes have been made to product over time.  The best way to tell is to look.

How to Open an Ion

Early versions of Ion with a DVI Splitter should use CR2032.

Early versions of Ion with two DVI ports and one VGA port should use CR2032.

Late Ion classic with two network ports and a Display Port connector may use the CR2032 or the CR2032W.

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