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What is the battery model for Kia K3 car key?

2 Answers

VanOmar

07/29/25 4:57am

Kia K3 key battery model is CR2032. CR2032 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 battery is cylindrical in shape, with F replacing it if it is square; 20 indicates that 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 varies between 200-240mAh, depending on the manufacturer's quality. The shelf life of CR2032 is typically 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. Generally, replacing a car key battery only requires the following 3 steps: Step 1: Remove the mechanical key. Press the lock button on the side of the smart key to remove the mechanical key. Step 2: Open the battery cover. After removing the mechanical key, you can see a deep groove and a shallow groove at the top of the smart key. The deep groove is the keyhole, while the shallow groove is used to open the battery cover. Insert the mechanical key into the shallow groove and pry it outward to open the battery cover. After opening, you can see the button battery. Gently pry it out to remove the battery. Step 3: Replace the new battery. Install the new battery, then reattach the battery cover and mechanical key in order. The key battery replacement is now complete.

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Yvette

08/12/25 8:36am

I've been driving a Kia K3 for several years and often change the key fob battery myself. It uses a CR2032 coin cell battery, which is easily available in supermarkets or online for just about a dollar. The replacement process is simple: use a coin or small screwdriver to pry open the key fob shell (usually there's a small notch on the edge), remove the old battery, pay attention to the "+" positive side of the CR2032, insert the new battery with the positive side facing up, then reassemble the shell and test the remote function. This saves you dozens of dollars compared to going to the dealership, and the whole process takes less than five minutes. Keep an eye on battery life—if the remote range shortens or the indicator light dims, replace it promptly. Generally, changing it every two years prevents sudden failure. I also recommend checking for water damage in the key fob to avoid circuit damage. This small maintenance ensures worry-free travel. Remember, using the correct battery model is crucial, otherwise it may affect functionality.

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