How To Prevent Needing A Jump Start
First of all, Rather than being concerned about your battery only when you need a jump start, we suggested having your battery serviced every 3 months or so by a repair shop you trust. Having your battery serviced will ensure you won’t be stuck waiting on someone to jump-start your vehicle because of a bad or old battery.
Secondly, sometimes it is human error. We have all been there a time or two. Leaving your headlights on or maybe even your dome lights overnight will drain your battery, even if it’s a new one. So, maybe creating a checklist you perform every time you get out of your vehicle will help prevent you from leaving them on. Headlights off, check. Dome lights off, check.
Thirdly, testing your car battery is a good idea. Again that goes back to battery maintenance by your auto shop. You can do this yourself, but if it needs to be replaced or even if there may be other electrical issues going on, you are already at the shop, and your mechanic will be able to diagnose and assist you right away.
But, if you want to do this yourself, with the engine off, and you know your battery should have a full charge, the battery should have a charge around 12. 4 volts or more. With the engine on, you should see between 13. 5 and 14. 6 volts. A quick and easy way to test your battery yourself to see if it’s showing signs of weakness is to start your car and turn on the headlights. If the headlights increase in intensity when you increase the RPM’s, this means there’s an issue related to the charging system, and you should have your car checked by an experienced mechanic.