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I ordered the iFixit battery repair kit and replaced the battery of my 15" early Retina MBP, ( not so easy but went ok) but now after just 9 months I already get a battery warning and battery capacity is 70 %. Thats frustrating. ( I already did SMC reset). How are your experiences with the iFixit battery quality? Update (08/18/2022) here the warning and CB screenshot

Hi @jamba77 Contact ifixit about the problem as there is a 12 month warranty on the battery. Scroll to the bottom of this link to see what to do