![]() ![]() ![]() In other words, when the engine is running, there is no economical or simple way for the vehicle to test the battery with a load-of a starter motor-and show you an indication if there is a problem. Given how complicated enough a vehicle’s circuitry is, it’s better not to accommodate the least necessary cases like a computerised battery health check system, while the test can simply be done by opening the bonnet and load testing it manually. In addition to this, there is a problem of having additional electrical circuits and sensors to be worried about. An old battery can still power the lamp and horns, but not start the engine. Well, if you want to check the health of a vehicle’s battery, it is only useful when you test it against the load. So as long as the battery could provide the current for the torque, and the alternator is able to recharge it as the engine runs, the battery is considered healthy. And of course, the secondary purpose of the battery is to power the lamps, horns, wipers, and whatnot electronics the vehicle has. Providing that load is the primary function of an automobile battery. So to provide that torque, the load required is very high. Once you turn on the ignition, the starter motor is what provides the required torque to crank the flywheel of the engine. Learn about automotive batteries in this Geekswipe explainer and find out why most cars and bikes don’t have a battery status indicator. It’s just a question of whether it is really essential for the driver. The choice to add a battery indicator to your car/bike dashboard boils down to a handful of factors only. Not to be confused with the battery health indicator. ![]()
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