What is the battery model for the Audi A6 car key?

[VonMadison]

The battery model is CR2032. It is a lithium manganese dioxide battery, named according to the IEC standard. Among them: C - indicates a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R - indicates that the shape of the battery is cylindrical, if it is square, F is used instead; 20 - indicates that the diameter of the battery is 20mm; 32 - represents the height of the battery as 3.2mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity is approximately 200mAh. CR2032 typically has a lifespan of 5 years. If the manufacturer's production level is not high or quality control is poor, its lifespan will be significantly shortened. Domestic first-tier brand batteries can generally guarantee this lifespan. If the usage environment is ideal (sealed, room temperature, free from moisture, etc.), its lifespan can be further extended to 8 years or even 10 years. The usage time of the car remote key battery is closely related to the frequency of use. The more frequently it is used, the shorter the usage time will be. If the remote key battery runs out of power, you can directly use the mechanical key to open the vehicle and start the engine. Car remote keys use button batteries, mainly three types: CR2016, CR2025, and CR2032. For the specific model used in each vehicle, owners can refer to the battery model in the user manual for replacement. Button-type CR2016 battery: The usage rate of car key remotes is very high, making it one of the most common car remote batteries. The battery voltage of this type is 3V, and generally, car key batteries are powered by 9V, so each time the battery is replaced, three batteries need to be replaced. Examples include Guangben, Toyota, Volkswagen, Mazda, etc. CR2016 specifications: battery diameter 20mm, thickness 1.6mm. Button-type CR2025 battery: Its usage rate is much lower than CR2016. However, some car keys still use it. It is thicker than CR2016 but has a relatively higher storage capacity. CR2025 specifications: battery diameter 20mm, thickness 2.5mm. This type of battery is also commonly used in audio remotes. Button-type CR2032 battery: Its thickness is twice that of CR2016. The 3V-CR2032 lithium manganese battery belongs to the lithium-manganese dioxide structure. The positive electrode material is chemically very stable manganese dioxide, the negative electrode material is metallic lithium, and the electrolyte is a lithium battery. The main components of the electrolyte are ethylene glycol dimethyl ether, propylene carbonate, and lithium perchlorate. Its shape resembles a button, hence it is referred to as a button lithium battery or lithium manganese button battery.

[VanRhett]

The battery model for my Audi A6 car key is a CR2032 coin cell. I remember one time in the parking lot when the key wasn't working, and I thought it was some major issue. After checking, it turned out the battery was just drained. I went to the supermarket myself to buy a new battery, and I'm sure the model was CR2032. Replacing it was quite easy—just use a coin to pry open the back cover of the key, pop out the old battery, and insert the new one. The whole process took less than 10 minutes, saving me the hassle and time of going to a repair shop. Since then, I've made it a habit to replace the battery every two years to prevent similar embarrassing situations. This type of battery is very common and can be bought at convenience stores, so don't worry about the difficulty—simple maintenance will keep your key responsive.

[LeMaddox]

My Audi A6 key uses a CR2032 battery. When I drove this car before, the key once failed to work, which gave me a scare. Upon closer inspection, I found the battery was drained, so I replaced it with a new CR2032. The operation was really simple: just pry open the back cover of the key with a small knife, remove the old battery, insert the new one, and align it properly. Since then, I've been replacing the battery every two years in advance to prevent sudden failures. I recommend others to handle it themselves too—it only costs a few dollars, so why spend hundreds at a 4S shop? The battery lifespan depends on usage frequency; frequent unlocking might require a replacement within a year.

[DiRyder]

The battery model for my Audi A6 car key is CR2032. I've replaced it myself several times—just pry open the back cover, remove the old battery, and replace it with a new CR2032. It only takes a few minutes. The key is not to reverse the positive and negative terminals. This saves both money and time, eliminating the need to rely on professionals. The batteries are available online or in supermarkets and are very cheap. It's a good idea to keep one or two spare in the car, just in case you run into trouble while out and need to replace it immediately.