Chosen Solution
I have macbook pro mid 2012 from last 1,2 weeks charging behave unexpectedly when i plugged for charging the lights goes green and still remain green rather then amber and also didn’t charge but sometimes while using MacBook when i plug magsafe to it amber light is on and its charging but not all time. So i want to know what is the issue and for this type of problem what is the possible solution. How i check magsafe voltage by magsafe pins. I will be highly appreciate if anyone guide my For resolving this issue Regards Update (01/02/2020)
Update (01/02/2020) After plugin my magsafe i took 3 shorts of coconut battery that are attached below. One thing that i note in these screenshots is charging with watts are not same.
Update (01/04/2020) @mayer @danj these are two screenshots after recalibrating battery, still green light on and battery isn’t charge
Looking at CoconutBattery output we see the system power adapter is not connected and discharging. Now plug in your charger give it a moment and take a second snapshot is the Power adapter now charging? Update (01/02/2020) Sorry its time for a new battery! The charging the battery shouldn’t alter the batteries condition (Green to Yellow)
With this low of a cycle count I would first try recalibrating the battery first before replacing it. Here’s how to do it: https://help.ifixit.com/article/265-batt…
