Well the normal voltage is 12 volts but I have a Lto lithium battery right now and it stays around 14.4 volts and I’ve had zero electrical issues but I don’t know how it would react to 16 volts
I thought you were talking about a hybrid battery. that 14.4 will work in the Nissan. Technically, lead acid batteries are charged to 14.2 to 14.4 volts. Car electrical systems are usually able to handle up to 15 volts.