How to Replace the Battery in an MG Car Key?

1 Answers
LaLillian
07/29/25 5:07pm
Pop open the MG car key, and you can manually pry it apart from the middle gap. After opening the key cover, there are two parts: one is the battery, and the other is a rubber ring. Remove the old battery, replace it with a new one, and then reattach the key cover to use it. Below is additional information about button batteries: 1. Button battery recycling: In alkaline batteries, silver oxide batteries, and zinc-air batteries that use zinc electrodes, the zinc in the negative electrode can react chemically with components in the electrolyte, leading to corrosion and consumption. This not only reduces the battery's available capacity but may also produce hydrogen gas, increasing internal pressure and causing expansion in sealed batteries. 2. Button batteries are currently not covered by the mercury-free regulations applicable to general dry batteries and still allow for the presence of small amounts of mercury. It is essential to adhere strictly to the recycling instructions provided by environmental authorities.
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