It has no battery holder!!!!!!!!! Condition: 100% Brand New Color: Like the picture show Buttons: 1/2/3/4 Buttons Key Blade: No Transponder Chip: No Electronics/Battery: No Weight: 25g Fitment: For 2007-2011 HYUNDAI Elantra For 2006-2011 HYUNDAI Sonata And other model with the same specifications of key blank and battery holder listed as below section... Important Note: 1.This item isn't a remote,it is just a remote key shell case replacement. 2.There is NO interior (remote/electronics/transponder chip)unit inside. 3.Please check your key look the same as the one in our product picture above before you purchase. 4.Get blade cut by local locksmith/dealer or swap the blade with your original. 5.Because of hand measurement ,1-2mm/inch deviation in size is a common thing,please check your size carefully before you buy it. Package Includes: 1 X Key Shell