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<blockquote data-quote="MacInWin" data-source="post: 1808059" data-attributes="member: 396914">1. Just about any size drive from either Crucial or OWC should work well. 2. Ditto. 3. I'm assuming the battery is not a true OEM battery, but some third-party version. Calibrating the battery actually just calibrates the circuitry in the MBP to know what is full and empty so that the monitoring will be more accurate for you. It does nothing to or for the battery itself. It's not surprising it fails to reach 0% as that is very, very bad for the battery. Lithium batteries like to stay in the 60-100% charged range and will last a good long time if you do that. Discharging to 0% is very hard on the battery.&nbsp; The better question about the battery is not the point at which it is empty, it's how long does the charge last in normal use? If it is lasting better than the previous battery, it's a plus. If it's almost back to the original, that's a plus. Just learn to watch the battery and know that it may shut down at 10%.EDIT: You can try an SMC reset to see if that will recalibrate the battery circuit. I don't know if it does.</blockquote>

[QUOTE="MacInWin, post: 1808059, member: 396914"] 1. Just about any size drive from either Crucial or OWC should work well. 2. Ditto. 3. I'm assuming the battery is not a true OEM battery, but some third-party version. Calibrating the battery actually just calibrates the circuitry in the MBP to know what is full and empty so that the monitoring will be more accurate for you. It does nothing to or for the battery itself. It's not surprising it fails to reach 0% as that is very, very bad for the battery. Lithium batteries like to stay in the 60-100% charged range and will last a good long time if you do that. Discharging to 0% is very hard on the battery. The better question about the battery is not the point at which it is empty, it's how long does the charge last in normal use? If it is lasting better than the previous battery, it's a plus. If it's almost back to the original, that's a plus. Just learn to watch the battery and know that it may shut down at 10%. EDIT: You can try an SMC reset to see if that will recalibrate the battery circuit. I don't know if it does. [/QUOTE]

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