1.6 or 1.8 GHz dual-core processor, 2 GB or 4 GB of SDRAM, 64 GB or 128 GB SSD

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MacBook Air lagging after new battery and lagging badly.

I noticed my Mac had a swollen battery and I took it out and bought a replacement on ebay. I replaced it this past Saturday and it was lagging so bad that I though hmm maybe my memory is too full so I wiped it. That didn't make a difference I ran a disk repair nothing as well help....

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were you getting lots of beach balls?

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Yes I was and it took forever to load like all day but, never once did it get hot

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Try an SMC reset and NVRAM reset (links below).

The 2012 and older MacBook Airs will lag when the battery is very low, so this could indicate an issue with the new battery. As long as the fan is not spinning full speed (indicating a sensor issue) it will either be due to low battery or a bad battery.

https://support.apple.com/en-ca/HT201295

https://support.apple.com/en-us/HT204063

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It didn't do anything :(

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What's not doing anything?

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It's still lagging. I have to get a new battery should of just went to the Apple Store.

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Katherine Escobar will be eternally grateful.
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