[ainarssems]

Low battery voltage can definitely kill fuel pump, I am no expert or physicist but will try to explain best I can. It is a bit counterintuitive as you think lower would not hurt, only higher but I have seen it happen before. The problem is that as volts drop current can increase and too much current can kill it. Now again this is not straight forward as normally current is voltage divided by resistance so lower voltage should be lower current. But the deal is that pump motor actually has very little what what is called resistive impedance so it draws a lot of current at startup but as soon as it starts turning the inductive and capacitive impedance goes up and adds to the resistive impedance so the total resistance goes up and and current reduces. If the voltage is too low to start the pump turning then capacitive and inductive resistance never come into play and pump is stationary with little resistance and a lot of current going through it and eventually it can kill the pump.