It is Designed to charge 2pcs Sram AXS/eTap battery simultaneously in one charger [Battery NOT included].
Compatibility - It could charge SRAM AXS/eTap battery safely, same LED status as original axs battery charger, let you charge easily and 2 pcs axs battery together, simple, safe and charging well
There has TWO way to Charge your AXS battery - FIRST: using USB C cable connect wall plug to provide power for Charging; SECOND: put a 3.7V 18500 battery inside to become a POWER BANK to charge your axs etap battery.
POWER Bank function - When you put in a 3.7V 18500 Lithium ion battery【NOT INCLUDED】 into the charger, it becomes a PORTABLE POWER BANK CHARGER, convenient for short traveling, portable and lightweight to carry
Package : 1* Dual Battery Charger , 1* USB C cable【3.7V 18500 Battery is NOT INCLUDED】, you will get after-sale service from our store for any issues.