How to maintain a macbook pro mid 2012's battery life

Hello,

I know that there are a lot of past posts of this, but they still leave me unanswered. Being a recent windows user, I don't know everything there is to know about macs, however the one thing I do know is how expensive they are, so I want to keep everything in tact for as long as possible.

One of the key things I have realised from these discussions is that people are saying it's bad to leave a mac charging, it's bad to fully decharge a mac, and it also seems alright to not charge it fully or decharge it fully before charging. These were all kind of confusing to me as I thought to keep a battery healthy, you had to completelly drain it before charging it, charge it fully whenever you charge it, and it didn't hurt to keep it charging constantly.

Now for anyone who doesn't want to read all thet above, the key things I want to know are:

How to keep the battery healthy

Will fully decharging it affect it

What happens if I don't fully decharge before charging/ what happens if I don't charge it all the way
What happens if I leave it charging constantly

And if I am charging it on and off at school, what will happen (i.e. one period I charge it 20%, then unplug it and then charge it another 20% the next period)

Thanks for all your answers in advance, and cheers for reading all this. I hope you can clear me up 🙂.