Open it up and I am sure you will find just one and you will then know how many and the correct size to buy.
Open the FOB and find out.
The are two batteries in the key fob.
Take the metal key out of the fob and use it to press the button inside the key fob. That should release both side and enable you to open the key fob to change the batteries
pull the key out off the side off the fob the batterie is in side
Press the button to unlock the car for approx 15 seconds. If a little red light does'n light up on the fob the batteries are low.
check the battery in the car and the batteries for the fob key
You will get a Keyless Entry Remote Fob Clicker for your 2000 Nissan Maxima SE.
You need 2016 batteries (3Volt)
you need a new fob
pop it open, two batteries + side down
with a fine blade or knife, prise open the key fob from the back. Remove the two batteries inside and replace with new ones. The fob will snap back into place after
Yes, they have two batteries... Model CR2025 3v batteries have been changed but still not working