We have designed and tested ours based on an actual console so are certain they fit very well.
Replacement Battery Cover for 1978 Mattel Electronics Football 3D Printed
1978 Mattel Electronics Hockey -Replacement Battery Cover / Lid - UK Seller
1978 Mattel Electronics Football 2 -Replacement Battery Cover / lid - UK Seller
1978 Mattel Electronics Soccer -Replacement Battery Cover / Lid - UK Seller
1978 Mattel Electronics Football -Replacement Battery Cover / Lid - UK Seller
Mattel Electronics Intellivision Console - Working, Tested with Sharp Shot