charger cord for an old I-pad

Apple still sells the older 30-pin cables - https://www.apple.com/shop/product/MA591G/C/apple-30-pin-to-usb-cable?fnode=91

this type ?

Apple 30-pin to USB Cable - Apple

Better made and longer length 30-pin dock connector cables here.

https://eshop.macsales.com/search/?q=30+pin+dock+connector

If I remember correctly that's the 30 pin charging cord. It's still available.

https://www.apple.com/shop/ipad/ipad-accessories/power-cables?page=2

Like Rudegar said.