Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Battery having "replace now" after swapping it with a new battery

I recently bought a new battery to replace my old one. But now it will only work if the cable is in, and the battery has a "replace now" icon still. Should I just try to return the battery I bought?

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I'd try resetting the SMC first to make sure it is seeing the new battery correctly. Reboot, hold down the P & R key and the Command & Option key and let it tone three times.

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Hi, if you need to re-program PCB in Macbook batteries we'd be happy to help

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