What Type of Battery is Used in Car Keys?

1 Answers
VanAdelyn
07/29/25 4:41pm
The commonly used car key batteries include the following three types: 1. Button-type CR2016 battery. This type of button battery is widely used in car key remotes today and is one of the most universal car remote batteries. The specifications of the CR2016 model are: battery diameter of 20mm and thickness of 1.6mm. 2. Button-type CR2025 battery. The specifications of the CR2025 model are: battery diameter of 20mm and thickness of 2.5mm. This type of battery is also commonly used in audio remote controls. 3. Alkaline 12V battery. This type is often used in early car key remotes and electric rolling doors in shops. Early Honda and Toyota models, among others, used this type of battery in their key remotes. Its characteristics include small size, high output voltage, and a longer remote control range.
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