Can you use a battery as a ground?
Active member. Re: Is battery negative and \'ground\' the same thing? The short answer is yes, you can just connect the ground to 0 Volts.
This material would develop micro cracks over time and become porous, and left on wet ground or damp concrete would begin to self discharge. Nowadays, battery cases are made of plastic that do not leak and can be stored on nearly any surface, even left in standing water with no ill effects.
In most cases the answer is yes - you should connect all the grounds together regardless of voltage differences. Having a common ground means that your circuit has a common point of reference, which is especially important when components are sending signals to each other.
If the power supply is a battery, and the devices in the circuit are designed for a positive supply, then the negative terminal serves as the ground. The positive terminal could also be ground, if all the circuits are designed for a negative supply.
Despite common belief, the battery ground is NOT the best place to ground accessories. The battery ground to body/engine/chassis is certainly required in order to complete the circuit which makes up the vehicles ground path.
Current will flow, only as long as the chemical reactions in the battery maintain a non-zero potential VA.
This means that if they were left on concrete or cement floors, the moisture from the floor could cause the wooden box to wrap, allowing the glass cells to shift and break. Of course, the battery acid would leak all over the floor and the battery would be rendered useless.
Also, tremendous technological improvements have been made in the seals around the battery posts and vent systems, which have virtually eliminated electrolyte seepage and migration. So, it's OK to set or store your battery on concrete.”
A bit of research reveals this to be a zombie truth: it used to be that batteries would discharge faster when stored on concrete, but newer technology put the kibosh on this phenomenon. Yet the belief persists.
The best way to ground your car stereo components is to run a 10 or 12-gauge wire from the amp, and 12-gauge from all other components, such as head unit and active crossovers, to a central location. Then run a single ground to the best source of ground, the negative terminal on your car's battery.
How do you ground batteries in parallel?
It is only necessary to have one ground wire from either battery negative terminal to ground for a parallel configuration. Just use the one that came from the factory. The negative pole of the battery goes to the trailer frame (ground). Connect them in parallel like this to equalize loads on the batteries.
To minimize electrical resistance and maintain full output voltage at electrical devices, auxiliary batteries should be securely grounded to the vehicle engine block."
You should avoid connecting cables directly to your battery. There's no point at all. The negative terminal of the battery is connected to your car body, so you can connect your siren's negative terminal directly to your closest ground point (car metal body).
The negative () cable is the ground cable; it is always connected to the frame or body metal and can safely be disconnected first with no chance of causing sparks. By the same token, always reconnect the positive cable before connecting the negative cable.
Ground is 0 V not because we define it like so, but because we measure its voltage with respect to itself. Ground is the point we choose to measure all voltages in the circuit with reference to.
Alternative ground points can be bolts, studs and screws connected to your vehicle's frame. Most bare metal on your vehicle's body can be used as an alternative ground point. There's also the option of manually installing your own ground point if you don't feel like searching your vehicle for an open ground point.
The battery should be grounded to the frame of the car as close to the battery as possible at the back of the car. At the front of the car, a connection between the frame and the engine block is necessary and is equivalent to routing a wire from the battery directly to the engine block.
As long as both amps are grounded to the same spot you should be able to avoid ground loop. Runing to a distro or running both grounds to the same spot ends up with the same result.
If the battery is not grounded properly, the vehicle will not run. A negative terminal connects to a grounded source on a car, often a bolt in the chassis. Most vehicle batteries today are filled with a charged acid solution that expels gasses and is highly explosive.
No There is no path for current to flow through the earth back to the source. so current does not flow. or if you believe there is a path just because the negative terminal is connected to earth and the end point of your circuit is connected to earth then the answer is still no because the resistance is too high.
Can current go backwards through a battery?
Answers and Replies. When you hook up a circuit to a battery to power a light for instance, current will flow until the battery is drained. Reversing the direction of the current through the battery using an external power source will charge the battery. This direction is the ONLY direction that charges the battery.
Don't Place the Battery Directly on the Floor
Placing it on the ground may lead to discharging.
Concrete is by design a porous material and water can pass through it by hydrostatic pressure, water vapor gradient or capillary action. Water can also enter at cracks, structural defects or at improperly designed or installed joints.
A minuscule amount of the chemical substances inside the batteries reacts even without any connections between the electrodes. Those internal reactions reduce the stored charge of the battery and thus decrease the capacity of the battery little by little. This phenomenon is called self-discharge.
Store your car's battery in a cool environment with little to no humidity. A great place in your home to store the battery is within a dark storage closet. Before setting it down on the floor or shelf, put down a small cloth or sheet. Never place a car battery directly on the concrete floor.
Depth of discharge (DoD) is a figure of merit that is often used instead of SoC. It is defined as an amount of charge removed from the battery at the given state (Qd) related to the total amount of charge, which can be stored in this battery (C) and usually expressed as a percentage: [4]
Despite concrete's low conductivity, current can pass through cement. It will still conduct some electricity and is actually a better conductor than some other nonmetal materials like glass.
A car or motor cycle battery can remain in the vehicle, even for long standstill periods if the garage has the right conditions for battery storage. The right temperature is important for the choice of storage location. Car batteries like to be kept cool and dry.
EN I Battery Basics: How do I store my battery correctly? - YouTube
a bad ground (or no ground) would prevent an amplifier from turning on. not connecting a 12v+ remote turn on wire, would too, prevent an amplifier from turning on. a blown fuse from a spark will prevent an amplifier from turning on. just a personal note: take off the ground (from the battery) first before installation.
Is a seat belt bolt a good ground?
Now, the best place to ground is wherever is closest to the actual frame of the car, not a piece of metal standing between two pieces of the frame, the actual frame, and seat belt bolts are a perfect place for this.
If you don't ground the Car amps properly or not connect the ground cable at all, that can cause some serious problems in the long run. Apart from the Amp turning on and off automatically, you might also see sparks flying out of your amp or it might even start a fire!
When two or more batteries are placed in parallel, the voltage in the circuit is the same as each individual battery. That is two, three, four or more 1.5 volt batteries in parallel will produce a voltage of 1.5 Volts!
Connecting batteries in parallel increases total current capacity by decreasing total resistance, and it also increases overall amp-hour capacity.
There is no limit to how many batteries you can wire in parallel. The more batteries you add in a parallel circuit, the more capacity and longer runtime you will have available. Keep in mind that the more batteries you have in parallel, the longer it will take to charge the system.
This arrangement can present a problem when a fully charged battery is connected to a partially discharged or dead battery. The current in the fully charged battery will drain to the less-charged battery, until both reach a common lower charge level, or even worse, discharge completely.
The main reason to install a second battery is to provide an “engine off” power source for devices like inverters, coolers, portable refrigerators, aftermarket radios, headrest DVD players, lighting, etc. – all of which are operated when the vehicle's engine is not running.
Ground the engine block to the frame with a heavy ground wire or cable, making sure that both connections are clean, tight, and metal to metal. Next, ground the engine block to the vehicle body with a heavy ground wire or cable making sure that both connections are clean, tight and metal to metal.
A battery can be drained whether it is sitting on concrete, wood, metal or any other surface. When a battery is sitting, it is slowly draining.
Also, tremendous technological improvements have been made in the seals around the battery posts and vent systems, which have virtually eliminated electrolyte seepage and migration. So, it's OK to set or store your battery on concrete.”
Why don't you put a car battery on the ground?
The battery shell would take on the moisture of the floor, as with the wooden encasement, creating an electrical current between the battery cells causing them to discharge.
If the concrete floor underneath was wet, the wooden case would swell, causing the glass cells to break. Subsequent batteries would sometimes lack a case altogether, allowing electrical discharges into the concrete.
Store your car's battery in a cool environment with little to no humidity. A great place in your home to store the battery is within a dark storage closet. Before setting it down on the floor or shelf, put down a small cloth or sheet. Never place a car battery directly on the concrete floor.
A car or motor cycle battery can remain in the vehicle, even for long standstill periods if the garage has the right conditions for battery storage. The right temperature is important for the choice of storage location. Car batteries like to be kept cool and dry.
Don't Place the Battery Directly on the Floor
Placing it on the ground may lead to discharging.
Concrete is by design a porous material and water can pass through it by hydrostatic pressure, water vapor gradient or capillary action. Water can also enter at cracks, structural defects or at improperly designed or installed joints.
Depth of discharge (DoD) is a figure of merit that is often used instead of SoC. It is defined as an amount of charge removed from the battery at the given state (Qd) related to the total amount of charge, which can be stored in this battery (C) and usually expressed as a percentage: [4]
Despite concrete's low conductivity, current can pass through cement. It will still conduct some electricity and is actually a better conductor than some other nonmetal materials like glass.
A SLA (Sealed Lead Acid) battery can generally sit on a shelf at room temperature with no charging for up to a year when at full capacity, but is not recommended. Sealed Lead Acid batteries should be charged at least every 6 – 9 months.
You also need to ensure that you do not use your car to charge your motorcycle battery too long. There are many differences between a car battery and a motorcycle battery. These two cannot be used in each other's place.
Where is the ground on a car battery?
The ground strap is the heavy black wire which connects to the car battery's negative terminal to the chassis of the car. Some other names for the strap include: negative battery cable, ground wire, or ground cable. The ground strap is the foundation of the entire vehicle's electrical system.
EN I Battery Basics: How do I store my battery correctly? - YouTube
AGM or Absorbent Glass Mat is an advanced lead-acid battery that provides superior power to support the higher electrical demands of today's vehicles and start-stop applications. AGM batteries are extremely resistant to vibration, are totally sealed, nonspillable and maintenance-free.