Changed battery and was charging but after calibration battery dead


After changing the battery per ifixit instructions it was charging to 100% after which I kept it charging for another 2 hrs then unplugged it and continued with your calibration instructions (using up the battery until it goes to sleep and wait at least 5 hrs before charging it up).

When I plugged it in the light stayed green and was not charging, I could not switch on the laptop as the battery was completely dead. Read somewhere to press option/control/shift/power for ten seconds after which the light turned orange. Thought it was charging but after half an hour noticed it hadn’t charge at all. Tried it for longer but no luck and battery felt cold after 2 hrs like this. Thank you for your help.

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