What is the battery model for Haval car key?

[Rojas]

The battery model is CR2032. It is a lithium manganese dioxide battery, named according to the IEC standard. Among them: 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 shape is cylindrical, if it is square, F is used instead; 20 indicates the battery diameter is 20mm; 32 represents the battery height is 3.2mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity is around 200mAh. CR2032 typically has a lifespan of 5 years. If the manufacturer's production level is low 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.), the lifespan can be further extended to 8 years or even 10 years. The usage time of a car remote key battery is closely related to the frequency of use. The more frequently it is used, the shorter the usage time will be. If the remote key battery runs out, you can directly use the mechanical key to open and start the vehicle. The batteries used in car remote keys are button batteries, mainly including models: CR2016, CR2025, CR2032, and CR2450. For the specific model used in each key, owners can refer to the battery model in the user manual for replacement. Button-type CR2016 battery: The usage rate of car key remotes is very high, making it one of the most common remote batteries. The voltage of this battery is 3V, while general car key batteries are powered by 9V, so three batteries need to be replaced each time. Examples include Guangben, Toyota, Volkswagen, Mazda, etc. CR2016 specifications: battery diameter is 20mm, thickness is 1.6mm. Button-type CR2025 battery: Its usage rate is much lower than CR2016. However, some car keys still use it. It is thicker than the 2016 model but has a relatively higher storage capacity. CR2025 specifications: battery diameter is 20mm, thickness is 2.5mm. This type of battery is also commonly used in audio remotes. Button battery CR2032: Its thickness is twice that of CR2016. The 3V-CR2032 lithium manganese battery belongs to the lithium-manganese dioxide structure. The positive electrode material is chemically very stable manganese dioxide, the negative electrode material is lithium metal, and the electrolyte is a lithium battery. The main components of the electrolyte are dimethoxyethane, propylene carbonate, and lithium perchlorate. It is shaped like a button, hence the name button lithium battery or lithium manganese button battery. Button battery CR2450: Compared to the other three models, it is thicker and larger, with a diameter of 24.5mm and a height of 5.0mm. The rated current value of CR2450 is 0.2mA, mainly used in low-power electronic products. Generally, the battery can provide an output current of 0.001mA to 5mA, with a continuous output current of up to 15mA and a flash output current of up to 30mA, meeting the requirements of most small electronic products for light emission, sound production, and RF output.

[LaIris]

As a Haval owner with three years of driving experience, the key fob typically uses a CR2032 battery, which is a standard 3-volt coin cell. I remember when I replaced it for the first time by following the manual: the key fob shell has small clips, and you can gently pry it open with a small screwdriver to reveal the battery compartment. The old battery was engraved with 'CR2032.' Don't rush to install the new identical battery—make sure the positive side faces up, or the key won't work. Battery life varies by usage; under normal conditions, it lasts about one to two years. If the button light doesn't illuminate or unlocking becomes sluggish, it's a sign to replace it. I recommend keeping a few CR2032 batteries on hand—they're cheap at supermarkets or online stores. Different model years may have slight variations, but they're generally compatible. Avoid no-name brands; opt for reliable branded batteries. Remember to recycle old batteries properly—don't toss them casually, as environmental protection matters. Keep an eye on your key fob's performance and replace the battery early to avoid hassle.

[SawyerDella]

I'm an amateur car repair enthusiast and have studied a lot about car remote keys. The mainstream battery for Haval car keys is the CR2032. You can check the model number on the battery label—CR stands for lithium-manganese type, and 2032 refers to a diameter of 20mm and a thickness of 3.2mm, with a voltage of 3V. Why use this? Because it's compact, has high capacity, and is suitable for frequent signal transmission. I've helped friends replace it: first, disassemble the key shell, usually by prying it open with a fingernail or tool from the gap, exposing the circuit board inside, then remove the old battery from the slot and replace it with a new one. CR2032 is easy to buy at electronics stores, costing around ten yuan. The lifespan depends on the environment—high humidity may shorten it. If you mistakenly install another model like the CR2025, its smaller capacity can cause issues. It's advisable to keep a spare. When the key malfunctions, check the manual to confirm the model. By the way, battery polarity is crucial—installing it backward may damage the circuit. Just take your time and operate carefully.

[BrantleyDella]

I drive to work daily, and when my Haval key fob runs out of battery, I just replace it. The basic model is CR2032, and it's easy to check: flip to the maintenance section of the owner's manual or search online for your car's model year. I've changed it a few times myself: open the key with a flat-head tool, remove the old battery and note the model, then put in a new CR2032. Before the battery dies, the key will give warnings, like shorter remote range or no response when pressed—that's your cue to act. Buying a new battery is super convenient, takes five to ten minutes, and saves money and hassle. Just remember not to mix up the positive and negative poles. Keep the key dry and avoid squeezing the battery to make it last longer.