Battery Warrenty

90 days, or the remainder of the original warranty or AppleCare coverage. A battery that's replaced under warranty or AppleCare is by definition covered by the remainder of the warranty or 90 days, whichever is longer.

Legal - Repair Terms and Conditions - Apple

6. Apple warrants for a period of ninety (90) days from the date of service (1) that service will be performed in a competent and workmanlike manner and (2) that all parts used to service your product will be free from defects in materials and workmanship, unless otherwise specified by Apple. Apple further warrants to the extent permitted by law, that batteries installed as part of Apple’s battery replacement service for Apple portable Mac computers will be free from defects in materials and workmanship for one (1) year from the date of service.Apple may request that you replace certain user-installable parts or Apple Products.

Apple One (1) Year Limited Warranty

A replacement part or Apple Product, including a user-installable part that has been installed in accordance with instructions provided by Apple, assumes the remaining term of the Warranty or ninety (90) days from the date of replacement or repair, whichever provides longer coverage for you.

momcos wrote:

This isn't for a notebook battery but an iPhone 6s battery. The original battery had a known issue, and the warrenty was extended for the original battery. I was late getting my battery replaced but still had it done at a discounted rate. I've had the replacement battery for 7 months and it's not holding a charge very well. I had just hoped that the replacement battery would have solved the issue, but it now looks a new phone will have to be purchased within a year.

I wasn't saying it was for the notebook battery, but I just wanted to point out what the "one (1) year" meant in the Apple repair terms.

I suppose you're talking about this:

iPhone 6s Program for Unexpected Shutdown Issues - Apple Support

This program was separate from the general battery replacement (at $29 in the United States) promotion. However, it wasn't a warranty extension, and as far anyone can tell the replacement parts receive the same warranty that any other replacement would get, which is 90 days unless the current warranty (or AppleCare) is in effect. You seem to state that you paid for the battery promotion, but it would be subject to the same terms.

When I had the battery service done (on an iPhone 7) I had to finger sign on an iPad that I understood all this. Not everyone reads all the terms, but I'm pretty sure that they make sure everyone sign off on terms that the warranty is for 90 days.

However, what's the battery health reading? If you have a rapidly degrading battery, you might ask what your options are.

Depends on what you mean by “light”. But there’s always normal variation in battery longevity, plus the battery health is really only an estimate based on monitoring battery characteristics. It’s not like measuring the level of a fuel gauge in a car.

Apple only has a one year warranty on notebook computer battery service.