iPad's battery health decrease by 3% in a month

The only way to reduce the decline of your iPad's Battery Health is to reduce the number of times that it needs to be recharged - this, perhaps, being facilitated by using the iPad while connected to an external power source when practicable. Keeping and using the iPad within its stated temperature range will also help to reduce the decline:

If your iPhone or iPad gets too hot or too cold - Apple Support

Your observed battery health does not necessarily reduce at a linear rate. While battery health can be influenced by a variety of factors, you might reasonably anticipate that the indicated health will reduce by 1% for each 50 full charge cycles - one cycle being any combination of charging that together sums to a 100% charge. The indicated battery health is reported as an integer value, rounded down, starting at 100% health.

Other factors can influence overall battery health. High ambient temperatures can permanently reduce the battery's ability to retain full charge - as can maintaining the battery at 100% charge for very long periods of time that leads to chemical aging of the battery. Limiting the battery charge to ~80% of maximum may, in some circumstances, reduce the chemical aging effect.

You should note that the iPad will periodically fully charge the battery - regardless of iPad settings - in order to maintain battery charge calibration.

An iPad battery is rated to retain 80% of its original capacity (when new) after 1000 full recharge cycles. Any combination of charging that together sums to 100% equates to one full charge cycle (e.g., 50% + 20% + 20% + 10% = 100% = 1 full charge cycle). As such, reducing the number of times that the iPad is recharged will slow the rate that the iPad's battery health will decline due to recharging.

If you have any concerns whatsoever - and seek assurance as to the health and performance of your iPad - you would be well advised to contact Apple Support and request a remote diagnostic of your iPad and its battery.

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 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/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 hands-on test and assess your iPad:

Genius Bar Reservation and Apple Support Options - Apple

A 3% battery health decrease in one month on an iPad A16 is faster than average, but it can happen depending on usage habits. Here are some tips to slow down future battery degradation:

1. Enable Optimized Battery Charging:

- Go to Settings > Battery > Battery Health

- Turn on "Optimized Battery Charging"

- This feature learns your charging patterns and avoids keeping the battery at 100% for extended periods, which degrades capacity faster

2. Avoid extreme temperatures:

- Lithium batteries degrade faster when exposed to heat above 35°C or stored in very cold conditions

- Avoid leaving your iPad in direct sunlight or a hot car

- Remove the case when charging if it causes the device to get warm

3. Reduce charge cycle frequency:

- Each full charge cycle (0-100%) counts as one cycle

- Try to keep your battery between 20% and 80% rather than fully charging and discharging it

- Plug in before it drops too low and unplug before it reaches 100%

4. Use low-power mode when possible:

- Go to Settings > Battery > Low Power Mode

- This reduces background activity and screen brightness, which also reduces charging cycles

5. Use the original Apple charger:

- Third-party fast chargers that push higher wattage than Apple recommends can increase heat during charging and accelerate wear

6. Check usage:

- Go to Settings > Battery to see which apps are using the most battery

- Disable background app refresh for heavy apps: Settings > General > Background App Refresh

Note: Some battery health decrease in the first few months is normal as the battery calibrates. If health continues to drop steeply, consider checking with Apple Support.