3-year-old iPad's battery drains quickly after charging to 100%

Go to Settings ➜ Battery and tell us what is says about health and what is using it the most.

If health is under 80%, the battery should be replaced.

click here ➜ How to check battery health and history on your iPad - Apple Support

JohnnyD48 wrote:

My 3 year old iPad will charge to 100% but only lasts 3 hours. Is it the battery or something else?

[Re-Titled by Moderator]

Original Title: iPad battery issue

settings - general - battery will tell you