You asked: Do Subs drain your car battery

Nope. But annoying your neighbors, fellow motorists and passersby with your totally non-awesome sound system with the car engine shut off just might run your battery down. … Playing the subwoofer at high volume with the engine switched off, would drain the battery fast.

Why are my subs killing my battery?

it might mean that you need a new alternator. reason being is because if the alternator isnt charging the battery then that means that the power coming from the alternator is going directly to your subs and your straining it badly. look into getting one from like stinger or something to get that extra POWER from it.

Can subs ruin your alternator?

Yes! Transient voltage spikes could easily damage the alternator or the rectifiers. Battery “dip” as indicated on the voltage meter might be a an indication of improper power ground cable or under-sized amp/battery cables.

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What drains a car battery when car is off?

What may drain a car battery when it’s off, however, are things such as interior lights, door lights, or even bad fuses. … But when the engine is off, the alternator can’t recharge the battery, allowing little electrical mishaps to drain your battery entirely.

How do I stop my amp from draining my battery?

The seperate battery for you amp, hide it in the trunk and run a straight wire from the 12+ to the 12+ on the amp, and a straight wire from the ground of the amp to the frame of the car. If it is under the car and on the frame, silicone it to prevent water from contacting it.

Will a capacitor keep my battery from dying?

A cap would be useless in preserving your power in the battery. You actually still have to charge it from the battery before you can use it. It will only help you avoid dimming (when you bump, your lights dim) and longer play when your car is off.

How do you fix a parasitic battery drain?

How To Diagnose the Battery Drain

  1. Step 1: Remove Negative Battery Cable. Negative Cable Removed. …
  2. Step 2: Check the Draw Across the Negative Cable and Battery Post. …
  3. Step 3: Remove and Replace Fuses. …
  4. Step 4: Isolate and Fix the Issue. …
  5. Step 5: Replace Negative Battery Cable.

8 окт. 2018 г.

What keeps killing my alternator?

Probably a short circuit in the charging system or a bad earth from the engine block to the negative terminal of the battery, so make sure that it’s a bad earth that may be killing them before fitting another alternator !

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How long will a new battery last without alternator?

It entirely depends on the capacity of the car battery. If the battery does not have a full charge, the vehicle may run from 5 to 30 minutes.

Can a dead battery kill an alternator?

A dead battery can short out an alternator. One of the ways a battery can fail is the debris that flakes off the cell plates, during normal use, builds up at the bottom and shorts two adjacent cells. Alternators don’t last long if that happens. Dead battery puts a heavy load on the alternator and can kill it.

Why does my car battery keep dying overnight?

A short circuit may cause excessive current draw and drain your battery. Check the charging system for a loose or worn-out alternator belt, problems in the circuit (loose, disconnected or broken wires), or a failing alternator. Engine operation problems can also cause excessive battery drain during cranking.

How often should I run my car to keep the battery charged?

All the experts Business Insider spoke with recommended starting a car once per week to prevent a dead battery. While idling your car may be better than nothing, actually driving your car is the best way to recharge a battery in a timely manner, even if it’s just around the block a few times.

How long can a car sit before battery dies?

This article was published more than 8 years ago. Some information in it may no longer be current. A car should be able to sit parked for at least a month without the battery dying, unless it’s a higher-end car with plenty of power-hungry gadgets and computers, experts say.

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Will a amp drain my battery?

So, can an amplifier drain your battery? The simple answer is yes, but a car battery can only be drained when it sends more power than receives back from an alternator. In other words, a car battery drains when it is not charged enough, which is a common problem when using powerful amplifiers.

Can a bad ground cause a parasitic draw?

A bad ground would not cause this. This is called a parastic loss. That is when there is too much current being drained from the battery with the key in the off position.

How long will a battery last with a 1 Amp draw?

A battery with a capacity of 1 amp-hour should be able to continuously supply current of 1 amp to a load for exactly 1 hour, or 2 amps for 1/2 hour, or 1/3 amp for 3 hours, etc., before becoming completely discharged.

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