For those boards you may encounter that do not have the battery riser boards, I've found these holders to be an excellent choice: https://www.digikey.com/en/products/detail/6S-1-2AA/6S-1-2AA-ND/2077833
With some sandpaper you can take 1mm off of each holder and they will fit perfectly side by side, and have more than enough meat left over to be strong. One of the pins will fit straight through the hole and the other pin will have to be bent out at a 90 degree angle, then the tip bent to fit into the hole. The end result is a strong, good looking replacement (I think). I'm sure there are other options but figured I'd share this one.
With some sandpaper you can take 1mm off of each holder and they will fit perfectly side by side, and have more than enough meat left over to be strong. One of the pins will fit straight through the hole and the other pin will have to be bent out at a 90 degree angle, then the tip bent to fit into the hole. The end result is a strong, good looking replacement (I think). I'm sure there are other options but figured I'd share this one.