None on Amazon.
It takes the AUX18L Deka/Remy brand battery made by East Penn Manufacturing only - no substitutes. They have distribution warehouses around the country the battery can be purchased at over the counter. In the San Diego area:
2709 Via Orange Way
Spring Valley, 2709 Via Orange Way 92108
You can also buy it online here: https://www.remybattery.com//start-stop ... KsQAvD_BwE
If you look at the label of the original battery, you will see the 'E.P.M. Products' (East Penn Manufacturing), and the address of their headquarters - 1 Deka Road, Lyon Station, Penn.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE