Why is my new battery already requiring service?

I have replaced my battery in the beginning of this month for the first time. My original battery worked well for 3 years before requiring service. In the first two I played Minecraft on it with no problems, in the last one I played a lot of Football Manager. I think that abused the battery a bit. I still used it after the "Service Battery" message appeared for about 4 months with no issues other than shorter battery life.

Not the same happened with the replacement I got from iFixit though. I had a lot of trouble after installing it, from clicking noises to random shutdowns and the battery not being recongnized at all. Also, it never charged up to 100%, only 98%. After reinstalling it a couple of times It seemed to work well for maybe a couple of weeks (despite the odd clicking noise now and then) and now it is giving me trouble again, showing the "Service Battery" message, randomly showing 0% charge when it actually has like 40% (it sometimes goes back to 40%, other times just shuts down). Today it stopped working completely and isn't recognized by my Mac.

I swapped over to my old battery and am having no issue other than the "Service Battery" message. Should I return my battery? is it possible to do so, since I have used it for quite a bit?

In the last week I have played quite a bit of FM, depleting the battery around 2 times per day. I know this is a lot, but I did the same with the original battery and it never pulled any of these tricks on me.

What do you think I should do? Is the problem mine and should I just keep my original battery, was the replacement defective and should I get a new one?

Thanks in advance.

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This is the volunteer DIY help forum. Use the link at the bottom of the page to contact iFixit directly. FWIW batteries are known to be bad straight out of the box. Even Apple had to replace/recall a batch of OEM batteries they were sold.

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