It's advisable to remove rings if there is any way they could short across a car battery. The battery has very low internal resistance, so you can get a sizeabl

It's advisable to remove rings if there is any way they could short across a car battery. The battery has very low internal resistance, so you can get a sizeable part of a kilo-amp flowing, which due to "P = I^2 R" can generate an impressive amount of heat. In fact some owners of certain Russian motorcycles with a propensity (Ural, Dneipr etc.) were able to weld bits back on in the field by using the carbon contact breaker points to do rough arc welding. Which doesn't contradict you at all - I'm just saying treat car batteries with respect.