How to repair a burnt-out lead-acid battery
LED strips and other LED light products are designed to be tolerant of voltages ranging from 11V to 14.5V. That is because they are designed to work in vehicles and other places with a 12V battery being charged. The charging float voltage of a 12V lead-acid battery is 13.8 volts DC. LED strips are a resistor in series with highly non-linear LEDs.