Can Charging Your Phone Drain Your Car Battery. When your battery connections are corroded it can allow energy to escape and cause the battery to drain faster. In a gas car the answer is mostly no.
The Top 8 Things That Will Drain Your Car Battery Yourmechanic Advice. But think about your cell phones battery. A battery functions best when its kept between 40 and 80.
The power draw of just the charger would be so small that youd have to leave your car parked for weeks for it to make any difference.
One possibility is a parasitic drain from a bad wire or connection in your cars electrical system. However this depends on if there is a device charging if power still runs even when the car is off and how long the car will be sitting before running again. The few drive-in movies that exist. Pushing your phone to extremes in either direction will cause wear and tear on the battery since it only has a finite number of charge cycles.
