Mon - Fri: 7:30 AM - 6:00 PM
Sat: 8:00 AM - 4:00 PM

Tag Archives: #deadbattery

What drains a car battery when the car is off?

What drains a car battery when the car is off?

1) Leaving lights on is the most common cause of battery drain Leaving your headlights or parking lights on all night will completely drain your car battery by the next morning. A short drive is not long enough to fully recharge your battery. The best way to bring your battery back to full charge is with a real battery charger that has a reconditioning mode. The reconditioning mode will dissolve the sulfation crystals that formed when it discharged. 2) Computer parasitic battery drain is the second most common cause Computer modules draw power when they’re running. When you shut the vehicle down, the modules are programmed to enter sleep mode after a set period of time. At that point, all the modules in your car should draw less than 50-milliamps. With that small current draw, your car battery can maintain its starting power for around 4-6 weeks, depending on its condition. However, if your battery is old, that 50-millamp draw can drain it i ... read more


Auto Repair
Denver's Quality Automotive is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Denver's Quality Automotive (303) 421-3033 if you have any issues in accessing any area of our website.