iATKOS | United Kingdom

I Just bought a new battery for my laptop and it came a few days ago
the battery percent is correct and its working fine but its saying my battery's capacity is reduced.

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https://preview.redd.it/nhg1lenhynq71.png?width=666&format=png&auto=webp&s=45dbb2a345d55aa38e7acb5bb65eb8e6a1804183

How can i fix that?