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2011年後期モデル番号A1278 / 2.4 GHz i5 or 2.8 GHz i7 プロセッサー

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New battery won't hold a charge

Otherwise seems to run normally, but dies when unplugged from charger. Problem persists after battery replacement. I’ve reset SMC and tested with multiple chargers. Charger light is green and doesn’t switch to amber. Battery icon on menu bar shows charging symbol but remains at 0%. Coconut battery says current charge is 0 and full charge capacity is 0.

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After sitting plugged in for a day, it’s now working fine! It seems like if you’ve replaced a totally dead battery, the machine might need a long time charging to recalibrate the new one, even if you’ve reset the SMC.

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This sounds like you have a damaged charging logic on the logic board. This often happens with knockoff chargers!

Don't Replace Your MacBook Charger With a Cheap Knockoff

OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth

Lacking safety features, cheap MacBook chargers create big sparks

FAKE Magsafe MacBook Chargers on eBay - Watch before buying a Mac Charger

Please get a REAL Apple unit and get rid of the knockoffs! [https://www.apple.com/shop/product/MC461...?|Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro)

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thardee さん、ありがとうございました!
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