Start Car With Battery Charger Connected. Verify that your car battery charger is in the off position before starting. Although an automobile battery is normally charged by the cars alternator while the car is running there are times when the battery dies for various reasons and needs to be connected to a charger.
Chargers are only designed to provide a relatively low current say ten amps max for a standard car battery charger. The easiest thing would be to simply get a set of jumper cables and see if the car will start off of a working alternator in another car. Even though there is no risk of overcharging with the use of a high quality charger the battery should not remain connected to the charger for more than 24 hours.
If not clean the terminals before charging as this helps to ensure a good connection.
Charging batteries while leaving the car connected will be absolutely fine. The typical result with a flat battery is that the vehicle attempts to draw the power required to turn the engine over the biggest ever demand on a car battery from the low output. A 40amp charger is a great accessory to own especially if you travel a. Thus if you arent sure how to charge a car battery using a battery charger its essential to read the manual and memorize the theoretical basis.
