The best battery to use is the smallest watch battery possible. If that isn't exact enough use the type that were used to power the original tamagotchi.
what size of car battery do i need for a 2003 buick lesabre
A 9 volt is to strong so you should probably use a C or a D battery (Cell)
You need a GM 75 series side post battery
Group 75
9 volt.
If you need a lithium battery, I would need to know what kind to give you an informative answer. Most places that sell electronics will sell the batteries they need so they can make the money on the sale and you won't have to go somewhere else for your purchase.
bright
Cr2016 3v
4 aa batteries
My owners manual lists part #YB14L-B2 for battery replacement
Mine uses a regular 12-volt car battery
no, but you do need a power source, such as a cell or a power pack if you do not want to use a battery.