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Question About Casio Calculator HB820-ER
How to change the battery in a casio calculator HB...

How to change the battery in a casio calculator HB-820ER as the back unscrews but I cannot remove the casing very easily and I don't want to break it.

Asked by Margaret on 01/18/2015 0  Answer

ManualsOnline posted an answer 9 years, 5 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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