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You can do a load test on a battery and compare it to the reserve capacity and cold cranking amps. If it is lower then the ratings then the battery is going bad. Keep in mind that the battery must be charged to its maximum capacity to have an accurate test. Trickle charge on 2 to 6 amps for approx. 6 hours then test battery
What else can I help you with?
What causes low voltage to the car starter?
A run down or nearing end of life battery. Dirty and/or loose battery connections.
Why does your car battery charge indicator show black after standing for only 3 days?
Could be, The battery is nearing end of life. There is a parasitic draw greater than .050 mA.
How can I jump start my automobile battery?
Connect the red cable to the dead battery's positive post and then connect the other end of the red cable to the good battery's postive post. Then connect one end of the black cable to the negative post of the good battery and the other end to a piece of unpainted metal in the engine compartment of the dead battery's car. Then wait 2-3 minutes and try to start the car.
Why is your car battery light on?
Could be a warning that the alt. is not charging. So, if you do not want to end up with a dead battery somewhere, have the volts checked right from the battery.
How to charge the battery from car to car?
Do the following in this order: clip the positive end of some jumper cables to the positive terminal of the good car battery (positive is usually red). Then, clip the positive end of the jumper cables to the positive end of the bad car battery. Now connect the negative end of jumper cables to the negative terminal of the good car battery and then connect the other negative end to THE BLOCK of the car with the dead battery. Do not attach it to the battery! Any metal place on the engine mount itself will do. To take it off, do everything in reverse order. The above answer can be done, but is not recommended. The recommended practice is to remove the battery and put it on a trickle charger. You can damage the alternator by blowing the diodes on the car with the good battery if you do what's stated above. Another thing is, you have to watch the age of the battery you are trying to charge; anything older than a year requires a battery fluid check, if possible. If the fluid is at a good level, put it on the charger. If it is low or dry, fill it with distilled water, wait for about and hour then put it on charger. I've linked a good point of reference below from a top automotive battery manufacturer.
How do you connect a car battery cable to a battery not in the car?
It would be essentially the same as connecting a battery in the car, except with longer cables. You would have to use jumper cables to extend the car battery cables. Be sure to follow ALL safety procedures. Do NOT let anyone or anything metal touch anything else except where you make the connections. Do not touch the metal connectors themselves. I assume there is no battery in the car. I will call the battery that is not in the car the "external battery". First connect the positive ("+", usually red) jumper cable to the positive car battery cable, & then the other end of that jumper cable to the positive external battery terminal. Then do the same with the negative ("-", usually black) car battery cable & jumper cable. The last thing you connect should be the far end of the negative jumper cable to the negative terminal of the external battery. When you are ready to disconnect the external battery from these cables, do so in reverse order, starting with disconnecting the negative ("-", usually black) jumper cable from the negative external battery terminal.
How do you hook up and charge hydraulic batteries with the car alternator?
start your own car like it was a regular old day. while the car is still on disconnect the car battery and remove it, get a pair of jumper cables connect them each end to the battery wires (positive to positive and negative to negative). get your hydraulic battery you gotta put it on something other then the ground. connect the other end of the jumper cables to the battery and charge its that easy. if you don't get how i just explained it sorry.
Can grease be used to prevent corrosion on a car battery terminal battery?
A very thin smear of Copper Grease over the Battery terminal / Cable end will help pevent corrosion.
A 12V car battery has six cells connected end-to-end What is the voltage of a single cell?
Battery voltage / number of cells = cell voltage 12/6 = 2 volts cell voltage
How can you safely jump a car when the positive terminal is red?
To safely jump a car when the positive terminal is red, follow these steps: Connect the red (positive) jumper cable to the positive terminal of the dead battery. Connect the other end of the red jumper cable to the positive terminal of the working battery. Connect the black (negative) jumper cable to the negative terminal of the working battery. Connect the other end of the black jumper cable to an unpainted metal surface on the car with the dead battery. Start the working car and let it run for a few minutes. Try starting the car with the dead battery.
What causes an altima battery to go dead overnight in a 2008 altima?
Either something is draining the power - or the battery is at the end of its useful life.
What is the proper battery cable connection when jumping two automotive batteries?
When jumping two automotive batteries, connect the positive () cable to the positive terminal of the dead battery and the other end to the positive terminal of the live battery. Then, connect the negative (-) cable to the negative terminal of the live battery and the other end to a metal surface on the car with the dead battery, away from the battery.
