No power after 4 hours on a new battery

Apple has eliminated all suggestions of 'calibrating' by deep discharge as a helpful remedy.

Do not do that!

But recent Apple articles suggest you DO connect it to power and charge it overnight, or at least several hours BEYOND when the indicator says 100 percent full. Then do an SMC reset.

<< I was told I would get from 8-10 hours before charging again. >>

As steve626 points out, that number is a Marketing number for a lab test conducted under tightly constrained conditions and hand-picked web sites. The brightness is turned down, and for some of these tests, the display window is reduced to 1920 by 1080.

That Test is NOTHING like Facebook, which has far more complex stuff going on in multiple sub-panes over the place.

That is NOT a PROMISE that you can achieve those results on a daily basis or with any-old web sites.

Apple will replace your battery when its innate capacity declines to less than 80 percent of its original capacity, and not otherwise.

[in my opinion] you do not have an issue.

Plug it in when you can, and live happily ever after.

That computer is a battery-CAPABLE device, It is not optimized as a battery-operated device (it is not an iPhone.)

Your computer performs best when connected to AC power, such as the power adapter. It can use the full output of the Power Adapter AND when doing especially challenging work could also freely "borrow" power from the battery. In some cases, even with the power adapter connected, the charged state may decline during very stressful work.

When used only on battery, your computer has no extra cushion of power, and may perform more slowly. However, for ordinary non-stressful tasks this may not be objectionable (possibly not even noticeable.)

In general, you should ALWAYS connect a power source when it is possible to do so, and only run on batteries (which could be somewhat slower) when no power sources are at hand. Modern Macs maintain optimum battery charge levels under program control, and will NEVER over-charge. Connected to Power is NOT necessarily charging.

When you set it down in one place, or set it down for the night, Plug it in. Then you won’t CARE whether it would drain the battery.

MacOS is not copy-protected in the usual sense:

Apple software downloaded from the Mac App Store, including MacOS, is not copy protected. However, it IS tagged with the Apple-ID of the purchaser when "purchased" (or equivalent — Think of MacOS as purchased on sale for $0.) A valid Apple-ID is required for almost all downloads from the Mac App Store.

You cannot update, upgrade, or install new software based on already-installed software UNLESS your Mac supplies the Apple-ID of the original software.

If your old MacOS is damaged, or you completely erased your Mac, the Apple-ID is not available, and you get the “cannot contact the server…” message that should go on to say, “…with the Apple-ID provided or NO Apple-ID”.

since this is a new computer, I need to ask,

¿Have you logged into your Apple-ID?

A known Apple-ID is required for updates from Apple.

Thank you for replying with your concerns, monafromroanoke. 😉

Here at the Apple Support Community, we are volunteers (thoughtful Apple users) who share knowledge in an effort to help others, such as yourself.

We don’t have the power to look into accounts, make changes, authorize repairs or offer discounts.

Only an authorized Apple employee would have access to the resources to help you.

I wish you the best, but you need to contact Apple Support for further assistance.

All the best! 👋🏼😉

monafromroanoke wrote:

I have been on the internet on social media and you tube this am for about 4 hours and I am out of power now. I was fully charged 100% when I started. I was told I would get from 8-10 hours before charging again.

Here is how Apple tests battery life in new MacBook Airs: "Testing conducted by Apple using preproduction 13-inch MacBook Air systems with Apple M4, 10-core CPU, and 8-core GPU, and preproduction 15-inch MacBook Air systems with Apple M4, 10-core CPU, and 10-core GPU, all configured with 16GB of RAM and 256GB SSD. Wireless web battery life tested by browsing 25 popular websites while connected to Wi-Fi."

There may be a big difference between Apple's "25 popular websites" and continuous use of YouTube for 4 hours, which could drain the battery several times faster. So if they said "8-10 hours" it was probably a very rough estimate based on "typical" browsing or use. But intensive use of video and audio could reduce how long it lasts considerably.

Unless Apple gave you some sort of guarantee on battery life, I doubt they will do anything for you other to test it in their lab under their conditions running some standard test suite. Remember, I am just a user like you, but I do not believe that Apple guarantees that replacement batteries will last some period of time before requiring a recharge. But it would not hurt to contact them about your concern.

I cannot get it to down load updates either. It stops and the 30 min left part.

That sounds like a different problem, unless you are trying to do that on the battery, which is never recommended. If the Mac is trying to update the OS on battery power it may throttle back on power provided and then it will take much longer. But my experience with the "30 min left" type messages is that they are rough and unreliable estimates. I would connect to power and let it do the update for at least several hours before being concerned. I have seen instances on my own 2019 MacBook Pro where it took much longer than 30 min and others where it took much less. In any case, I suspect this download update issue is separate and has nothing to do with the battery. Two things you can do -- verify your internet connection speed and WiFi speed (if on WiFi); and try doing the update when booted into Safe Mode.

Who replaced the battery? Was it done by Apple or an authorized service provider or by an unauthorized shop?

If the latter, they used a non-Apple part. There's no telling what you got.

Is that the best I've got?

Good luck. I'm not wasting my time on someone with that kind of attitude.

If Apple replaced it, you have a warranty. I believe it is 90- days. Work with Apple.

Apple will not see your issue in this user-to-user setting.