あ・・・すまん、その店は日本には送ってくれんらしい。

こっちだな
https://www.aliexpress.com/item/high-quality-Battery-4-000-597-01-LIP1412-for-Sony-PSP-GO-PSP-N100-PSP-NA1006/32960712929.html

またはこっち
https://www.aliexpress.com/item/Cameron-Sino-For-Sony-PSP-GO-PSP-N100-PSP-NA1006-Game-PSP-NDS-Battery-High-Capacity/32948105303.html