Amazon.com : PowerTrust 3Pcs AHDBT-401 Battery for Gopro Hero 4 AHDBT401 AHBBP-401 AHDBT 401 Digital Battery and LED 3-Port USB Charger for GoPro Hero4 HERO4 Camera : Electronics
For GoPro Hero 4 Hero4 battery +LED charger for go pro AHDBT-401 HERO4 Black Silver action camera accessories - AliExpress
GoPro Rechargeable Battery (for HERO4)
Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics
GoPro HERO4 and GoPro AHDBT-401 Battery (2-Pack) by Wasabi Power
Amazon.com : Smatree Battery (3 Pack) and 3-Channel Charger Compatible for Gopro Hero 4 (NOT for Hero 5) : Electronics