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I'm working 95% of my time with AC power and Thunderbolt Display. Since macbook pro retina's battery are no longer easily switchable I'm concerned about it's life and would like to maximize it. Before macbook retina I used to charge the battery to 50%, then after removing it I used the macbook without battery on AC power. But it's no longer possible.
I googled a little but didn't find a clear guidance about how to use your macbook mainly connected to AC power and not doing damage to your battery.
From what I know :
- Full discharges should be avoided.
- Keeping you battery charged to its maximum for too long time is also bad.
- Try to keep charging cycles as low as possible. It's battery life (macbook pro retina battery is expected to keep 80% of its charge after 1000 charging cycles).
I try to disconnect AC power once a week until battery indicator goes down to approximatively 75% and then I connect back the AC to charge it to 100%. I don't know if it's the best steps to maximize the battery life but I think it's much better then to keep it all the time connected to the AC power.
What do you think. How to preserve battery life working on AC power ?