What is the battery model for Hyundai car key?

[StEliza]

The battery model for Hyundai car key is CR2032. CR2032 is a lithium manganese dioxide battery, named according to IEC standards. 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 ranges from 200-240mAh, varying by manufacturer. The shelf life of CR2032 is typically 5 years. If the manufacturing level of the producer 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 and other disturbances), the lifespan can be further extended to 8 years or even 10 years. Generally, replacing a car key battery only requires the following three 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 slot and a shallow slot at the top of the smart key. The deep slot is the keyhole, while the shallow slot is used to open the battery cover. Insert the mechanical key into the shallow slot and pry it outward with force to open the battery cover. After opening, you can see the coin cell battery, which can be easily removed with a gentle push. Step 3: Replace the new battery. Install the new battery, then reattach the battery cover and mechanical key in order, and the key battery replacement is complete.

[VanConnor]

As a Hyundai owner, my car key battery died last year—it uses a CR2032 lithium battery, which looks like a small coin and is easy to find in supermarkets. Replacing it is simple: gently pry open the key fob with a thin tool like a coin (don’t force it to avoid cracks), remove the old battery, and insert the new CR2032 in the correct orientation. I’ve noticed the battery lasts about two years, so I recommend checking it early to avoid getting stuck when locking or starting the car. If the key still doesn’t work after a battery change, the circuit might be corroded or damaged—it’s best to visit a 4S shop with a spare key. Usually, it costs just a few dozen yuan to fix.

[KathrynLynn]

I just replaced the battery in my Hyundai car key, the most common CR2032 model. As a DIY enthusiast, I prefer doing it myself: there's a small gap on the back cover of the key, gently pry it open with a flathead screwdriver or a card, being careful not to damage the internal chip; then remove the old battery, remembering the positive side faces up, and replace it with a new CR2032. The whole process is quick and saves money. I stocked up on a few cheap ones online, costing just a few cents each, which makes things much easier. Remember not to buy off-brand batteries to avoid leakage and damage to the key.

[SanStella]

Running out of battery in a Hyundai car key can be really dangerous, especially when parking at night. The CR2032 model is the most common type—reliable and durable, usually lasting 1-3 years. I always replace it in advance and never wait until it fails. When replacing, be careful: gently pry open the key cover, align the new battery with the contacts, and avoid pressing too hard. If it still doesn’t work after replacement, the key might have water damage or a circuit malfunction—don’t force it. Seek professional repair immediately to prevent security system issues that could compromise safe driving.