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I just received mine for the MPB 2015 this week, original battery (which I doubt was genuine) is bloated, but still held up in terms of capacity to originals according to coconutBattery[0]. Will monitor the iFixit one closely as well. But I still trust them better than random China or local seller.

[0] https://coconut-flavour.com/coconutbattery/

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The degradation is the real problem. They hold up for the first tens of charges but quickly lose 20-50% of capacity. It might have to do with the lack of OEM charging circuitry on the replacements, or perhaps just shoddy quality

Would capping the max charge at 80% make any difference for this? Apple seems to do it with their latest phones and laptops. I don't plan on using the laptop on battery for long times. So my main concern is just keeping it at a 2-3 hour capacity for the upcoming years (mostly plugged in) and not having it bloat up like the previous one, making the laptop a fire hazard.

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