What is the battery model for the Buick Regal key?
3 Answers
The battery model is CR2032. It is a lithium manganese dioxide battery, named according to the IEC standard. Among them: C- indicates the 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, and 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 about 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, no moisture, etc.), its lifespan can be further extended to 8 years or even 10 years. The usage time of the vehicle 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. The batteries used in car remote keys are button batteries, mainly including models: CR2016, CR2025, CR2032, and CR2450. For the specific model used in each key, the owner 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, and it is almost one of the most common car remote batteries. The voltage of this battery is 3V, and most 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 that of CR2016. However, it is still used in some car keys. It is thicker than the 2016 model 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 battery CR2032: 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 dimethoxyethane, 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. Button battery CR2450: Compared to the other three models, it is thicker and larger, with a diameter of 24.5mm and a height of 5.0mm. The rated current value of CR2450 is 0.2mA, mainly used in low-power electronic products. Generally, the battery can provide an output current of 0.001mA to 5mA, with a continuous output current of up to 15mA and a flash output current of up to 30mA, meeting the requirements of most small electronic products for light emission, sound production, and radio frequency output.
I just helped my brother replace the battery in his Regal key fob, so I'm quite familiar with this! Regal key fobs generally use CR2032 coin batteries, but there are slight differences depending on the year: pre-2013 older models use a single CR2032, while the redesigned slimmer key fobs for later models use CR2025. Replacing the battery is super easy - just use a coin to pry open the key fob shell, but be careful to align the +/- polarity marks in the battery compartment. You can buy Panasonic or Sony batteries at the supermarket; avoid off-brand ones as they tend to leak. Here's a fun fact: when the battery is running low, the dashboard will display a warning message. When you see it, replace the battery promptly - don't wait until it completely dies to panic.
Last time my car key suddenly stopped working, and after some research, I found out it was a battery issue. The Buick Regal key batteries come in two models: the older, thicker version generally uses CR2032, while the newer, slimmer key usually takes CR2025. Don't force it open when replacing! The key's back cover has a groove—just twist it open with a coin. Important reminder: check the model number printed on the battery surface. CR2032 has a larger diameter and is 3.2mm thick, while CR2025 is only 2.5mm thick. Using the wrong one might prevent the cover from closing. I once bought cheap batteries from a convenience store to save money, but they only lasted two months before dying. Later, I switched to Duracell-branded ones, and they've been reliable ever since.
