The MacBook 12″ Retina uses an internal lithium-ion battery rated between 10.8 and 11.26 V with capacity from about 55 to 95 Wh. Across the 2015, 2016, and 2017 releases there are 18 distinct part numbers covering roughly 77 models, including options like 020-6380-A and A1322557. Because the exact part is tied to your specific build, check your model identifier before ordering. The price for a replacement is $105.99.

Match by your exact model and part number rather than the general “12-inch Retina” name. All units share the A1534 chassis, but they map to 18 different part numbers such as 661-5229 or 020-5071-B. Find your model identifier in the About This Mac window or on the underside of the case, then compare it against the listed part numbers. Confirming voltage in the 10.8 to 11.26 V range and capacity from 55 to 95 Wh helps verify a correct fit.

A MacBook 12″ Retina replacement battery costs $105.99. That single price applies across the 18 part numbers in this category, which cover about 77 compatible models from the 2015 through 2017 releases. Since the price is consistent, your main task is matching the correct part number (for example MA348LL/A or MC-MBOOK15) to your specific model rather than shopping on price alone.

Not always. While every model in this line uses the A1534 chassis, the category spans 18 distinct part numbers, and a 2015 unit may take a different battery than a 2017 unit even when they look identical. Voltage ranges from 10.8 to 11.26 V and capacity from 55 to 95 Wh, so a mismatched part can fall outside your model’s spec. Always confirm the part number, such as 020-6380-A, against your exact model.

The 12″ Retina is a single sub-series across the 2015, 2016, and 2017 releases, all on the A1534 chassis, but the battery part numbers shift by year and configuration. The line includes 18 part numbers like A1322557 and 661-5229, with voltage spanning 10.8 to 11.26 V and capacity from 55 to 95 Wh. The physical install approach stays the same: an internal battery glued to the top case that requires careful removal and re-application of adhesive.

Look at the original battery itself, which is glued inside the top case and usually carries a printed code such as 020-5071-B or MC-MBOOK15. You can also confirm your model identifier through the About This Mac window or the regulatory text on the underside of the laptop, then cross-reference it against this category’s 18 part numbers. Matching the printed part number to a listing is the surest way to land in the 10.8 to 11.26 V, 55 to 95 Wh range your model needs.

Yes, but it is a delicate job because the battery is glued to the top case (the keyboard assembly). A self-replacement on the A1534 chassis typically calls for adhesive removal tools, solvent, and fresh replacement adhesive for reassembly. Confirm you have the correct part number first, for example 020-6380-A, and verify the spec falls in the 10.8 to 11.26 V range. If you are not comfortable with adhesive removal, a repair technician can handle the install.

Watch for sharply reduced runtime, the laptop shutting down unexpectedly even with charge remaining, or the system reporting a service-recommended battery condition. A trackpad that feels raised or a case that no longer sits flat can also indicate the battery should be replaced. Since these packs run 55 to 95 Wh and 10.8 to 11.26 V, a healthy replacement (such as part A1322557) restores expected capacity. When you see these signs, match your exact model and order the $105.99 replacement.