Denon DTR-80P portable DAT recorder Li-Ion battery (might also fit Casio DA-R100)

You need:-7,4V Li-Ion battery (available as battery pack built of two 18650)-Wall charger for 7,4V Li-Ion battery (NOT a simple power brick, it must explicitly be a Li-Ion charger!). I use an Enerpower TNS30W-084200.-5,5 x 2,1mm round chassis DC socket (should of course fit the plug of the charger; the mentioned Enerpower uses 5,5x2,1mm DC plug). If you use another type of plug/socket, you might have to adapt the model-A piece of 5mm wide nickel strip for the contacts, some wire to connect everything-Some strong double-sided adhesive tape to fix the battery in the case-Recommended: Hot glue to fix the contacts from moving after you soldered the wires to them, a piece of heat shrink tube for the contacts of the DC socket-4 screws M3 x 8mm-Optional: Matte black acrylic spray for a nice lookFor perfect fit you should use the highest print quality settings available on your printer and print the mount plate with 100% fill for durability.