u/EstimateCritical9927

My lfx v6 has been misfiring when it accelerates. I looked up the codes and it was just a p0300 which is a random or multiple misfire. I also looked up previous codes from when the misfire happened and it said all the sensors in the motor had high or low voltage. The battery is 11 yrs old. Could this be a failing battery? It never struggled to start or anything.