GoPro max Chargeable Battery Lid Ulanzi GM-2 - YouTube
Amazon.com: JYJZPB MAX Replacement Battery 3-Packs and 3-Channel Battery Charger for GoPro MAX 360 (Fully Compatible for Original GoPro MAX) : Electronics
Amazon.com : Wasabi Power Replacement for GoPro MAX Battery (2-Pack) and USB Dual Charger Compatible with GoPro ACDBD-001, ACBAT-001 (Fully Compatible) : Electronics