Need a battery for your old Sharp/Kenwood/Denon/Pioneer player (round Li-Ion 3.6V)? Here's an option! : r/minidisc
SHARP 50 Battery Charger - Micropower
Μπαταρια Για Sharp 770
Original Battery Ubatia286afn2 3130mah For Sharp Aquos R2 Sh-03k / Ubatia280afn1 Battery For Sharp Aquos R Sh-03j Shv39 605sh - Mobile Phone Batteries - AliExpress