LP-E 17 Compo set

Two (or more) LP-E17 Batteries: These are usually from a third-party manufacturer (like SmallRig, Neewer, Wasabi Power, KingMa, etc.) rather than original Canon batteries.

A Dual-Slot Charger: This allows you to charge two batteries simultaneously, which is very efficient.

A USB Charging Cable: Most modern chargers use a standard Micro-USB or USB-C cable, allowing you to charge from a power bank, laptop, car adapter, or any USB wall plug.