My battery and charger guide for the Sony a7III covers all you need to know about which batteries and chargers are supported, both original and third party.
Sony A7 III Review
32 Tips & Tricks for Getting the Most Out Of Your Sony a7R III – Colby Brown Photography
Canon Eos 80d Power Adapter, Canon Lp E6 Power Adapter
The Complete Setup Guide for the Sony a7R V – Colby Brown Photography
Sony a7S III Battery & Charger Guide - Alpha Shooters
Sony a7III Battery and Charging Advice From a Pro
Guide to Sony a7 a7R a7S a7II a7RII a7SII camera accessories
Sony a7iii Disassembly - iFixit Repair Guide
Sony a7III Battery and Charging Advice From a Pro
7299 NP-FZ100 Dual Channel LCD Battery Replacement for Sony A7III A9 A7RIII A7SIII
Ultimate Guide to Sony a7 III & a7R III Camera Accessories