Camera Battery, 1720mAh, Li-Ion
From Amazon
GoPro Rechargeable Enduro Battery 2-Pack (HERO12 Black/HERO11 Black/HERO10 Black/HERO9 Black) - Official GoPro Accessory
OnBuy
GoPro Rechargeable Enduro Battery 2-Pack (HERO12 Black/HERO11 Black/HERO10 Black/HERO9 Black) - Official GoPro Accessory