I agree with the above comment.
You destroyed one iPad because you didn't want to pay for some better qualified, third party electronics repair service to do this for you.
Do you really want to tempt fate, again, and perhaps destroy another iPad trying to get the device open to replace a battery you may have NO idea how to actually replace?
FYi,
When working on these mobile devices, you need specialised electronics tools to not only to open the inside of these devices, but to actually remove items to get at the battery power source.
Much of the intenal arrangement of an iPad is glued/taped in, and shielded with special shielding tape, you may need specialised tools to remove some internal hardware to be able to get free access to the battery.
You have no clue what you need to do to get that battery installed into that iPad.
Return this battery and get your money back and forget attempting another DIY battery replacement in your last working iPad.
You destroyed one iPad not knowing what you are doing. Forget trying this, again.
If your 2017 5th gen iPad needs a new battery, if your iPad is still in like new condition and undamaged, you need to search online for your nearest, “local” Apple store location and call contact phone numbers and call to make an appointment to have your Apple iPad diagnosed and options presented you.
If Apple employees determine that your 5th gen iPad is read for a new battery, an exact replacement device, in lieu of an actual battery repair/replacement will cost you $99 U.S.D.,plus tax.
No destroyed iPad!
Failing that,
You need to contact Apple support via the contact support link located at the upper right hand corner of every Webpage of these Apple support communities.
Use the Hardware Repair support categories.
OR
by installing and using the Apple Support app found in the iOS App Store.
Tap the iOS App Store link below.
https://apps.apple.com/us/app/apple-support/id1130498044
OR
Call contact Apple via the support numbers found in the link bekow.
Contact - How to Contact Us - Apple
Tap the link below.
https://www.apple.com/contact/
Best of Luck to You!