The tutor tells how to change the batteries for the Sharp el-520w, el-531w, and el-w535.

Here are the cell requirements:

• el-520w: two LR44 cells
• el-531w: two LR44 cells
• el-w535: one LR44 cell

Flipping any of the three models over, you’ll see a crease across the plastic near one end. The screws at that end are the ones to remove to change the cell(s).

I bought Sunbeam replacement cells in a pack of 8, I think from a dollar store. LR44 cells can vary widely in price, depending on where you buy them.

HTH:)

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.