One week old iPad battery health is about 94% and drains fast

How, precisely, are you attempting to measure your iPad’s remaining battery capacity. Available Apps are, at best, only able to estimate the iPad’s battery capacity…

Unlike iPhone, iOS/iPadOS for iPad has never had the Battery Health feature - most likely because iPad batteries are both considerably larger and have a much longer service life.

An iPad battery is rated to maintain at least 80% of its initial capacity after 1000 full charge/discharge cycles - whereas an iPhone is rated to have 80% of initial capacity after 500 full cycles.

There are software packages available that can access battery cycle count. Popular choices for Mac are Coconut Battery and iMazing - whereas iMazing is available for PC.

https://www.coconut-flavour.com/coconutbattery/

If you are experiencing difficulties with your iPad battery holding charge, you might be best advised to first have your iPad tested. 

If you directly contact Apple Support - and explain your problem - you can request a remote battery diagnostic. The tests will confirm the status of your battery - and other elements of your iPad’s health.

Alternatively, a visit to the Genius Bar at your local Apple Store would provide opportunity for your iPad to be similarly tested by the Apple technicians - after which you can explore your available options.

You can contact Apple Support using the Contact Support link at top-right of this page. You can also initiate a support case using the excellent Apple Support App; if not already installed on your iPad, the App can be downloaded from the App Store:

https://apps.apple.com/gb/app/apple-support/id1130498044

You can learn more about battery performance here: iPhone Battery and Performance - Apple Support

It is pretty weird to have a brand new device with maximum capacity of 94%, have you contacted support and ask them about this ?

The battery normally has to be replaced when it reaches 80& maximum capacity

To be absolutely clear, nowhere in iPad settings will you find a definitive measurement of your iPad's battery health. While this feature is a relatively recent addition to iOS for iPhone, Apple have [to date] never introduced this feature for iPad.

As already outlined, there are third-party tools that can estimate your iPad's battery health - of which popular well respected commercial options include Coconut Battery (for Mac) and iMazing (for Mac and Windows PC).

The two references that you cite describe a method whereby you can extract specific parameters from a system analytics file - and using this information calculate an estimate of an iPad's battery health. There are third-party Shortcuts that can semi-automate the necessary extraction and calculation process. This method of estimating Battery Health is not supported by Apple - and hence its efficacy is unverified.

You should note that while the method described in cited links is increasingly well known, it is not the mechanism used by Apple to generate battery health data in iPhone - and may generate calculated statistics that differ from the native measurement present in iPhone. Apple's Battery Health feature for iPhone has no reliance upon analytics logs being enabled; if analytics logs are disabled in iPhone settings, this does not disable the iPhone's displayed Battery Health.

If your iPad is new - and you have any concerns whatsoever - you would be well advised to seek assistance directly from Apple Support - and request a remote diagnostic test. You can contact the Support Team using the Support link at top-right or bottom-left of this page.

Alternatively, you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:

https://apps.apple.com/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad; if fault or warranty defect is identified, you'll be in the best possible place to explore your available options for remedy:

Genius Bar Reservation and Apple Support Options - Apple

You’v answered this many times when the figures are reported natively:

https://www.reddit.com/r/ipad/comments/p21nef/pro_tip_how_to_check_battery_health_on_ipad/

https://www.tomsguide.com/how-to/how-to-check-your-ipads-battery-health.

My mini 6 has a BatteryHealthMetric reading of 92 after about 4 weeks but sadly logs are only kept for the last 8 days so I don’t know the fresh health. Oddly if I do the nominal-maximum ratio like TG says I get more than 100%, 5200/5172, but also see 104 for MaximumCapacityPercent (don’t know where this comes from) and 5146 for AppleRawMaxCapacity up from 5126 7 days ago. Other figures never moved which makes me think the TG post is wrong. I’d think NominalChargeCapacity is a battery model standard (why NCCMin and NCCMax are 0) and MaximumFCC and MinimumFCC are the battery sample extremes. MinimumFCC 4709 means the worst in the capacity bin is 91% of nominal. As for health if the metric is a percentage that could refer to the stock raw max which I can’t see.