# Often asked: How Many Amps Does A Car Computer Use When Off?

Contents

- 1 How many amps should a car draw when its off?
- 2 How many amps does a car use at idle?
- 3 How many amps does it take to drain a car battery?
- 4 How many amps does a power window motor draw?
- 5 How many amps is too much draw?
- 6 How do you know if your car has a parasitic drain?
- 7 How many amps is considered a parasitic draw?
- 8 Does idling a car waste gas?
- 9 Is 300 amps enough to start a car?
- 10 How long will a car battery last with a 5 amp draw?
- 11 How long will a 100Ah battery run an appliance that requires 400W?
- 12 Which motor is used in power window?
- 13 How much torque does a window motor have?

## How many amps should a car draw when its off?

The acceptable current draw should be around 0.03Amps. If that can’t be achieved upto 0.075-0.1 can be acceptable if the vehicle is driven most days.

## How many amps does a car use at idle?

Typical Current Loads for Automotive Systems, Lighting and Accessories: Engine Idling (no lights or accessories on) – 35 to 50 amps.

## How many amps does it take to drain a car battery?

Although the maximum rule of thumb recommended parasitic drain is around 30 mA (0.030 amps) a typical drain usually falls into the 7-12 mA range, even though some luxury vehicles do approach the maximum. Multiply the drain (in amps) by the time (in hours) the battery sits without being recharged.

## How many amps does a power window motor draw?

New window motors work better than old Moving in the glass up direction (with the help of the spring unwinding) it only drew 2.4 Amps.

## How many amps is too much draw?

In fact, we suggest a 25-milliamp draw is acceptable and anything that exceeds 100-milliamps indicates an electrical issue that needs to be addressed.

## How do you know if your car has a parasitic drain?

Pull the negative off the battery. Put the test light between the post and the ground wire. If the light illuminates, you have a draw. Use the fuse pull method to find the draw; when the light goes out, you found the draw.

## How many amps is considered a parasitic draw?

Parasitic Battery Draw A normal amount of parasitic draw for newer cars is between 50-milliamp to 85-milliamp current draw. A normal amount of parasitic draw for older cars is a reading less than 50-milliamp. Anything past these amounts indicates an electrical issue and should be addressed by a mechanic.

## Does idling a car waste gas?

Idling wastes fuel – and money. Vehicles get ZERO miles-per-gallon while idling. Larger vehicles tend to waste more fuel than smaller ones. Idling can also cause greater engine wear-and-tear over time, resulting in higher maintenance costs.

## Is 300 amps enough to start a car?

How many amps do I need to jump start my car? 400 to 600 amps will be more than enough to jump-start any normal, consumer vehicle. Commercial vehicles may require up to 1500 or 2000 amps. Compact and small vehicles can be boosted with as little as 150 amps.

## How long will a car battery last with a 5 amp draw?

Battery capacity decreases as the rate of discharge increases. Batteries (say 100ah battery) have been tested at a given discharge rate of 20 hours. That means a constant use of 5 amps an hour for 20 hours (5 x 20 =100).

## How long will a 100Ah battery run an appliance that requires 400W?

A 100Ah 12 volt deep-cycle lead-acid battery can run a 400W continuous DC load for 1.5 hours with the recommended 50% Depth of Discharge. A 100Ah 12 volt deep-cycle lead-acid battery can run a 400W rated AC fridge for 15 hours at a rate of 40 watts per hour.

## Which motor is used in power window?

The brush DC Motor is particularly a favorite in automotive industry because of its simplicity and affordability. Many automotive manufactures use them for power windows, seats etc.

## How much torque does a window motor have?

The stall torque or minimum torque needed to completely stop the motor shaft from rotating, or stall the motor, is less than 8 units or pound-feet (N.m) and the stall current is less than 20 amperes.