![]() This means that even if they remain unused, the batteries may lose their charge or fail to function properly after a decade. ![]() In terms of shelf life, lithium coin batteries have an expiration period of 10 years after production. ![]() Nevertheless, key fob manufacturers use an appropriately-sized battery that can handle their key fob's power requirements for years of normal usage. More range and longer button presses mean more power consumption. Furthermore, some key fob commands require long button presses, such as window operation. However, we also have to take note that not all key fobs consume the same amount of battery power.įor example, some key fobs can work from a maximum range of 15 feet, and others can work at 100 feet. In short, the thicker the coin battery is, the longer it can last with the same usage. On the other hand, the CR2450 has a 24 mm diameter, a 3.2 mm thickness, and a charge capacity of 486 mm. Although these batteries have the same voltage, they differ in size and capacity.Ī CR2032 has a 20 mm diameter, a 3.2 mm thickness, and a charge capacity of 240 mAh. However, some key fobs use different coin batteries, such as the CR2450, CR2025, and CR2016. Most car key remotes or key fobs use 3-volt lithium coin batteries, particularly the CR2032. How Often Should You Replace Your Car's Remote Battery? Do read on, and we'll help you understand more. If you want to know more about your car remote's battery as well as your car's key fob, then you've come to the right place. So how long do car remote batteries last? We've done the research for your reading pleasure.īattery life may vary depending on the frequency of usage, but many modern car remote batteries typically last between three to four years. Like all remote controllers, however, car key fobs can only work when they have sufficient battery power. Modern car key fobs allow you to remotely lock and unlock your doors, operate your windows, and even start your car.
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