Xiaomi 11t pro battery showing zero

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I've just changed my battery on my Xiaomi 11t Pro and it won't move from zero. It also doesn't show as charging when I plug it in. I've checked all the connections again. I've tried in safe boot. I've also tried resetting my phone. When I connect a power bank, it seems to suggest it's charging, but the phone doesn't acknowledge it. Any other suggestions before I contact the seller of the battery? I've also thought about leaving it to completely discharge, but I worry that I won't be...Read more