What is the model of the rechargeable battery for the BMW X5 car key?
1 Answers
The battery model for the BMW 5 Series key is CR2032. CR2032 is a lithium manganese dioxide battery, named according to the IEC standard. The breakdown is as follows: C - Indicates a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R - Indicates the battery shape is cylindrical (if square, it is replaced by F); 20 - Indicates the battery diameter is 20mm; 32 - Represents the battery height of 3.2mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity ranges from 200-240mAh, varying by manufacturer quality. The shelf life of CR2032 is typically 5 years. However, if the manufacturer's production level is low or quality control is poor, its lifespan can be significantly shortened. Domestic top-tier brands can generally guarantee this lifespan. Under ideal conditions (sealed, room temperature, no moisture, etc.), the lifespan can extend to 8 or even 10 years. BMW models such as the 3 Series, 5 Series, and 7 Series all use the CR2032 battery for their keys. Replacing the BMW 5 Series key battery involves just three steps: Step 1: Remove the mechanical key. Press the lock button on the side of the smart key to release the mechanical key. Step 2: Open the battery cover. After removing the mechanical key, you will see a deep slot and a shallow slot at the top of the smart key. The deep slot is for the keyhole, while the shallow slot is used to open the battery cover. Insert the mechanical key into the shallow slot and pry it open to reveal the coin battery. Gently remove the battery. Step 3: Replace the battery. Install the new battery, then reattach the battery cover and mechanical key in order to complete the replacement. Two important notes when replacing the BMW 5 Series key battery: 1. The key uses a CR2032 coin battery—ensure you purchase the correct model. 2. Replace the battery quickly, as the key has memory functionality. If power is lost for more than 5 minutes, re-pairing will be required.
