How long will the car battery last if the interior light is left on?

[OAthena]

The power consumption of car interior lights is relatively low. If you forget to turn them off, it would take approximately 20 hours to affect the battery and drain it. Here's some relevant information: 1. For most car models on the market, if the turn signal is left on, it will activate the parking light function. If the left turn signal is left on, the small light on the left side of the car will stay lit; if the right one is left on, the right side will stay lit. These small lights have much lower power than headlights, and even if forgotten, only one side remains lit, not both, so the battery can typically last one night without issues. 2. If the hazard lights (double flashers) are accidentally left on all night, the turn signals may indeed stay illuminated. The power of turn signals varies by model, ranging from 10 watts to 21 watts. Taking 21-watt turn signals as an example, with four lights (front and rear) totaling 84 watts, plus additional lights on side mirrors or body panels on some models, the total power consumption can be comparable to two xenon headlights. In such cases, the battery might last around 9 hours.