Battery Problem with E5-576G, even at 100% battery goes down to 0% and shuts off, Please help

So I have a E5 576G laptop that is very old, I know for a fact that the battery is done for and even though this laptop is not meant for gaming I use it for gaming, I always keep it plugged in so it's always at 100% but sometimes the electricity in my house goes off and the battery goes down to 0% and shuts off, usually when it comes back on it starts charging and goes back to 100% in a few hours but now its stuck at 1% and I've been charging it all night (approx 15 hours) I don'

t know if it's a fault with a driver but this has never happened before, this problem is not allowing me to play games as it lags so much its unusable, Please help me if you can.

[Edited the thread to add issue detail]

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Puraw

https://community.acer.com/en/discussion/718538/battery-problem-with-e5-576g

Hi, working with a bad battery is not recommended as unexpected power issues and system throttling (or shut down) can happen, 7 years is the maximum lifespan even for a high-grade battery, people usually replace the battery after 3-4 years, you can get a new AS16A5K battery here:
AS16A5K AS16A8K 4ICR19/66 Battery for Acer Aspire E15 E5-575 N16Q2 E5-576G E5-575G E5-475 F5-573 E5-575-52JF E5-575-33BM - AliExpress 7