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What Type of Battery Does a Car Key Use?

1 Answers

OOwen

07/29/25 2:10pm

Car key batteries are typically CR2032, but other models include CR2025, CR2016, and CR1632. Here, "CR" stands for lithium battery, "20" indicates the battery diameter (20mm), and "32" refers to the battery thickness (3.2mm). Below is an introduction to car key battery models: 1. Button-type CR2016 Battery: This model is widely used in modern car key remotes and is one of the most common types. It has a voltage of 3V. Since car keys usually require 9V, all three batteries are typically replaced at once. Specifications: diameter of 20mm and thickness of 1.6mm. 2. Button-type CR2025 Battery: This model is less common than the CR2016. It is thicker but has a higher storage capacity. Specifications: diameter of 20mm and thickness of 2.5mm. This type is also often found in audio remote controls. 3. Alkaline 12V Battery: These were commonly used in early car key remotes and electric rolling shutters. They are compact, have high output voltage, and offer a longer remote control range.

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