Batteries plus will replace them and they are quite reasonable.

According to their website, the closest store is in Mt. Dora. I think they had one near Best Buy, but it closed.

Make sure they use Apple parts. I have a non Apple battery. They told me no one but Apple has Apple parts. Not wanting to go to Orlando I let them install it. It does work but when I click the battery tab in settings it shows up as a non Apple battery and no longer registers my battery usage amounts. I wonder if this will be an issue when I trade it in for a new phone at Verizon in the future.

Anker makes quality products. I have one of their large power banks (that can charge a laptop, multiple times) that I take when I travel...

I also have two of their mag-chargers...

Your 85% battery is like saying your car that had a 10 gallon gas tank now can only store 8.5 gallons of gas. So yes, the tank empties out about 15% faster

So if your phone in new condition needed a charge after 10 hours of use, it now needs a charge after 8.5 hours. That is not a huge difference.

My 4 year old iphone battery health is only 81%. Rather than replace the battery, I have a couple of magsafe chargers in the house that i can just set the phone on anytime for a boost. I also can charge in the car.

As someone else mentioned, if your iphone is starting to “swell”, then your battery is failing and needs to be replaced immediately

I took an iPhone in once to see about new battery. Tech actually told me I’d be better off buying a battery pack phone case. A 1/3 the price of replacing battery and doubled my phones original battery capacity.

One bad experience on a different product means nothing. BestBuy is an authorized Apple repair shop, they use Apple parts, and charge the same as Apple for the product being discussed; an iPhone12.

Turning off “location services” will greatly extend battery usage. Or if you really want an app to know your location switch that app to “allow only when in use”. Do this whether you decide on new battery or not.

I wouldn’t use the geek squad for anything, they are pretty bad at technology. I would go to a local Apple Store and let them fix or replace your battery.
But before that, go into settings and look at the battery to see what apps are draining your battery. Usually it’s safari with a lot of windows open. Try to keep the number of windows open or better yet shutdown safari when your done and see if that keeps your iPhone running longer

A lot of posters are recommending using Apple parts. I never buy any Apple products, and when I need a part to repair something, I always go with the cheapest part I can find. Of course manufacturers recommend using their OEM parts. I know I'm cheap, but, is there any real evidence that OEM parts are worth the extra cost?

Most auto shops would go out of business if they always used original equipment parts for repairs. I bought a Dyson vacuum and 2 batteries failed under warranty until the warranty expired and I bought a battery from Amazon that was half the cost and had 2 times the amp rating. I use 10 dollar refrigerator filters in my whirlpool frig ever since they raised the price for Whirlpool filters to $60. I also bought an $80 ice maker instead of the $300 Whirlpool one.

apple
 

Make a online appt for apple at mall of millenia - then go have them do it

I wouldn't drive 100 miles roundtrip to replace a battery on a phone that is only worth about $200, when Best Buy is an authorized Apple repair facility. It's just a battery.

I have the same problem. Found out Mozilla tends to drain the battery. Followed some online instructions as to how to stop this but to no avail. Switched to safari using duck duck go. Seems this might help a little but what I would really like to do is totally delete Mozilla but haven’t figured out how to save my bookmarks.

Real evidence? Probably not, but there is abundant anecdotal evidence that aftermarket knock-off parts are frequently not as good as the OEM parts.

Does it matter that the water filter in your refrigerator doesn't work quite as well? No, just buy another. Does it matter that the ice maker doesn't last as long? No, you can buy two more and still save money.

Does it matter that the battery in your phone fails early? Maybe not, unless it fails by swelling and destroying the phone or catching fire or if the phone becomes damaged when it is disassembled again.

Personally, I am willing to pay a premium for some items if they are important enough to me and I believe I will get better quality. The tires on my car, the beer that I drink, and my phone battery are important enough.

I have had two lithium batteries that swelled, one destroyed my Samsung cell phone, and the other almost destroyed my HP laptop. But, both of these batteries were the original battery that came with the devices, not aftermarket ones.