What is the battery model for the Yueda Kia K3 key?
4 Answers
The battery model for the Yueda Kia K3 key is CR2032. CR2032 is a lithium manganese dioxide battery, named according to the IEC standard. The naming convention 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 that the battery is cylindrical in shape (if it were square, F would be used instead); 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. The shelf life of a CR2032 is typically 5 years, but this can be significantly shorter if the manufacturing quality is poor. Domestic first-tier brands can generally guarantee this lifespan. Under ideal conditions (sealed, room temperature, no moisture, etc.), the lifespan can extend to 8 years or even 10 years. Generally, replacing a car key battery involves just three steps: Step 1: Remove the mechanical key. Press the buckle 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 two slots at the top of the smart key—a deep slot and a shallow slot. 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 gently to reveal the coin battery. The battery can then be easily removed. Step 3: Replace the battery. Insert the new battery, reattach the battery cover, and then reinsert the mechanical key. The key battery replacement is now complete.
I just replaced the battery in my old K3's key fob last year, and the model is CR2032. You can easily find this type of button cell battery at supermarkets. Pay attention to the small groove on the back of the key—just pry it open with a coin. Never use metal tools to avoid scratching the plastic shell! Last time I replaced it myself, it only took five minutes. Remember to place the silver side of the battery facing up and align it with the slot, then press the buttons to test it after installation. However, note that the battery compartment has polarity indicators—if installed backward, it won’t work, and you’ll have to redo it. This battery model is quite universal; most German and Japanese cars use it. If you buy Panasonic or Sony batteries, they can last over two years. If the key’s indicator light dims, it’s time to replace the battery—don’t wait until it’s completely dead, as finding a spare key in an emergency can be a hassle.
The new Kia K3 remote key uses two types of batteries: the older 3-button version uses CR1620, while the newer 5-button version uses CR2032. Check the back of your key—if it's printed with '3V CR2032' near the logo, that's the correct one. My shop always stocks both types, and it's super easy for owners to replace them themselves: just pry open the key seam with a fingernail and lift the plastic shell from the button side. Note the crescent-shaped notch in the battery compartment, which aligns with the battery's raised side. After replacement, test the response speed of the lock button—new batteries should respond instantly. Avoid off-brand batteries as they tend to leak and corrode the contacts; we recommend automotive-grade options like Varta or TYIN.
As an owner who has used three generations of Kia vehicles, I have firsthand experience with the K3 key battery. For the 11-16 models, the thinner key uses CR1620, while the post-17 models with thicker keys switched to CR2032. It's advisable to take a photo of the key's internal layout before disassembly, as the small springs inside can easily fly out. You can buy the battery for just five bucks at an electronics market—no need to overspend at the dealership. Last time I replaced mine, the sensitivity dropped, but it turned out the small spring was just bent; a quick adjustment with tweezers fixed it. Note that battery efficiency halves in sub-zero temperatures, making winter failures more likely, so keeping a spare mechanical key in your wallet is a smart backup.
