We need a little more detail to answer that. Between what two points are you measuring? Do you mean 0 ohms or infinite ohms?What does it mean if my multimeter doesn't read continuity on my trim?
For EU :Does anyone know a good place to buy 18650 lithium cells?
This is probably what you are looking for https://www.digikey.com/en/products/detail/keystone-electronics/54/2254090Where can I find clips for the batteries?