How much does a new battery cost for ipad

Hi Diane761,

Welcome to the Apple Community.

Apple support's article:

"iPad Service and Repair"

says: If out of warranty: US$ 99 and a US$ 6.95 shipping fee if shipped.

There's a link below to the complete article:

NB: There is info. on what to do on your iPad before sending,

and

There is a link at the bottom of the article, if you want to begin the replacement process

iPad Repair - Official Apple Support

All the best :-)