Steam deck Battery Health

When I got my Steam deck about a year ago, I would get 8-9 hours in half life 2 and 2.5 hours in cyberpunk 2077, now I get around 6.5-7 hours in half life 2, and 2 hours in cyberpunk, should I replace my battery soon, or wait a bit to replace it, the system still says its at 100% percent health but I don't believe that number entirely.

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could be dried thermal paste causing the CPU temperature to rise and requiring higher fan rpm to cool the console, drawing more power and decreasing battery life. Does your Steam deck feel hot when gaming?

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Not really, if sits around 65-70 degrees when playing a really heavy game like cyberpunk

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