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I bought a battery for my 2017 function key macbook pro with retina. However, the one i recieved seem to have a cable/wire that was not attached as it is in the picture on your website as well as on the battery I replaced. Is it broken. If so, I need a replacement

The battery has a small cable that connects to the SMC logic to monitor the battery. If it’s missing the battery won’t work correctly. Click to zoom the image

You’ll need to return it if its missing.