Talking book battery leads
Battery compartment showing wires passing through back cover from the solar panel affixed to the book and the connections to the talking book’s battery compartment, with positive wire (green wire on upper right, green arrow) connected to positive battery lead where the red wire and the bump on the battery connects, and negative wire (black wire on lower right, grey arrow) connected to negative battery lead, where the black wire from the book electronics and the flat part of the battery connect. These should be soldered for durability.