Your Sony Hi-MD player deserves longevity. These lip-4wm compatible battery is your answer. They are also 500mAh vs. 370mAh (original Sony). The search is finally over. Selling for €20 plus shipping. Shipping
Sony LIP-4WM replacement battery for Minidisc players - buy at digitec
LIP-4WM□SONY□Hi-MDウォークマン□MZ-RH1□リチウムイオン電池 ガム電池 product details | Proxy bidding and ordering service for auctions and shopping within Japan and the United States - Get the latest news on sales and bargains - One Map
My first LIP-4WM build - and it works!, yay! : r/minidisc
Finnaly got a LIP-4WM battery replacement for the Sony DH10P. Hours and hours of music =) : r/minidisc