Various Reasons For A Dying Lawn Mower Battery. One of the most unfortunate situations that can occur just at the point where you want to start up your lawn mower and tidy up the yard as quickly as possible. There’s sometimes the very unfortunate situation where the lawn mower battery starts to die. But why?There may not necessarily be as a result of just one thing – it may be several reasons that are responsible for your lawn mower cutting off because of a dead battery. We’ll show you those reasons. One of the reasons may be the lawn mower battery: It may be because there are one or more cells in the battery were dead. You should try to charge up the batter with a charger, but if you realize that method isn’t working, this may signify that the battery is defective. You need to get a new one.. Another reason could be because of the charger: Try using a multimeter to test out the charger for continuity. Also, try testing the outlet that you used the charger in and make sure that it has not tripped a breaker.. It could possibly be because of the alternator: Try turning the headlights on and turn the engine off. See if the headlights dim when you turn the engine off and if they do, then that means the alternator is working. If they don’t dim, then it’s probably because there is a defect in the alternator. Test it with a multimeter to be sure.. Another reason could be because of the voltage regulator: A defective voltage regulator means that the battery won’t get enough voltage to keep it running and it will quickly die.. If you are looking for small engine repair services in Ottawa, mobile car battery boosting, lawn mower and lawn tractor repairs and tune-ups, or snow blower repairs then give us a call to book your mobile small engine repair today. We fix, repair, and tune-up small engines such as lawn mowers and snow blowers and home generators. The best part is that we come to you so no more waiting in line or traveling back and forth to fix your small engine equipment. Also if you are looking for generator repair services in Ottawa to ensure that you have sufficient power for your home if the power goes out then give us a call to book your mobile power generator repair today. We fix, repair, and tune-up all major brands of home generators to keep your powered up during power outages. The best part is that we come to you so no more waiting in line or traveling back and forth to fix your power generator for your home in Ottawa.