if the battery is in good condition and the lights are standard then 3 hours might be enough so it will not be able to restart itself but this may vary according to battery size condition and lights wattage.
The head lights are the biggest long term drain on your battery. (The starter is a heavier drain, but you can't leave it on for very long.)
it depens on the quality of the battery and the vehicle wont start after aproximaly 30 minutes
DVD players will only drain your battery if left on for long periods of time, such as for a full movie.
leaving your lights on for a long period of time.. headlights or just playing the radio and leaving it play for a long time
LED Bulbs have very long life and low power drain. The total length of time the lights could be powered would depend on:The power capacity left in the battery, which can be dependant on the temperatureThe power draw of the bulbsThe number of bulbs litThe other losses in the system, such as resistance in the wires and switches
When your lights are on and your engine is not running you are taking the power for your car lights directly from your battery. If you leave them on long enough, you will run down your battery and your car will not start. Then you will need a jump.
In a modern car there are a few things that are still "on" even when the ignition is off, there's a clock in there somewhere, you've probably got an alarm as well ASO. It isn't much, but enough to drain a battery if left long enough, particularly if the battery isn't 100% to begin with.
Depends upon how the battery was discharged, but generally yes, once a lead acid battery has been fully discharged from leaving lights on or similar methods which drain the battery slowly it will never recover. The only time this is not true is when the battery is drained from the starter motor due to the vehicle not starting for some other reason. In this case the battery will recharge without any long term damage provided the recharge is done within around 24-48 hours.
In an battery containing a liquid, such as a car battery, you could either measure the density of the sulphuric acid with a hydrometer, or you could conduct a cranking test. Dry cell batteries do not usually show a significant voltage drop until they are near the end of their life. One can roughly estimate this by creating a small drain, but this will, by definition, drain the battery if left on too long.
For outdoor lights, it is recommended to use a lithium-ion battery pack for long-lasting and reliable performance.
The average car battery last around three years. The battery life may shorten, if the car is in extreme heat or cold, lights are left on often, and if the car is enchanced for racing.
Answer 1There are couple of variables involved which make difficult a determination of available hours of function, but the simple answer is YES, leaving the hazard lights on too long can seriously drain the battery.The variables include; the number of bulbs [determines the amount of current drawn from the battery], and condition of the battery [whether fully charged, or run down low from, for example, many attempts to start the vehicle].I know from more than one personal experience with Ford pickup trucks, that leaving the hazard flasher lights on overnight [even with a healthy, fully charged battery] will result in either a dead battery in the morning, or at least depleted to the point that it cannot crank and/or start the engine!The problem is worse when there is a trailer attached to the vehicle.j3h.