This is a brand new Asus C31N1845-1 battery, Also known as the type A version of this battery. This Asus C31N1845-1 battery is compatible with the ChromeBook Flip C346, C346FA models and the C31N1845-1 battery part number. Additional compatible battery part numbers and model numbers are listed below.

There are 2 batteries with the same battery number. ( Yes isn't this crazy ). This is the C31N1845-1. It looks just like the picture in this listing.
The other battery style has the battery number C31N1845 without the "-1".

This C31N1845-1 battery is rated 11.55 volts and 42 Whr and can last up to 7 hours on a full charge.
The other battery ( Type B) has additional plastic tabs that extend from the battery casing edges. It can be found by clicking this link: Asus-C31N1845.

Each C31N1845-1 battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.