Where to Buy Car Key Batteries?
2 Answers
Car key batteries are available at automotive service centers, 4S stores, and authorized car repair shops. Generally, car key batteries are button cells, which have a relatively long service life. Composition of Car Keys: They consist of a transmitter switch, transmitting antenna, integrated circuit, etc. Inside, there are identification code storage circuits and amplitude modulation circuits, with a rotary-type lithium battery installed on the opposite side of the circuit. The transmitting frequency is selected according to China's radio standards, and it transmits switch signals. Functions of Car Keys: After parking and turning off the engine, if you realize you forgot to close the windows, pressing and holding the lock button on the remote key can close the windows. Some car keys have a horn-shaped button; pressing this button when you can't find your car will make the car sound. It also serves both as a car locator and an emergency function—when you suspect someone suspicious is nearby, you can make the car horn sound continuously to attract attention. For some cars, pressing the unlock button once opens the driver's side door, and pressing it twice opens all doors. Some cars may not have this feature set by default, but you can consult a 4S store to enable it.
Car key batteries can be purchased in many places. I often replace the battery in my car key myself and find them in the daily necessities section of supermarkets, such as Carrefour or Walmart, where these large chain stores offer a wide variety of battery types. Online shopping is also convenient; searching for the car key battery model on JD.com usually means delivery the next day. Additionally, stationery stores and small convenience shops on the street often stock common button battery models, so if you're in a hurry, you can check nearby. Remember to confirm the battery model before purchasing; most car key casings will indicate a model number like CR2032—buying the wrong one means a wasted trip. Replacing the battery yourself is particularly simple; just use a coin to pry open the key casing, but don't use too much force to avoid scratching the plastic shell.
