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How do i attach the charger to the battery

Do i need to take the terminals off ie disconnect the battery, before attaching the crocodiles to start charging?

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No, that is not necessary, just connect the charger, if it has an amperage adjustment and the battery is completely dead charge it slow at about 5amps for 5 hours or charge it faster at about 10amps for two hours, either will work.

Posted on Feb 23, 2012


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I do not know if it will help you now, but the problem that I had and I know someone else had with these same symptoms, no crank, but radio, headlights work, etc.

There is a wire cluster between the battery and the steering wheel. The positive wire (red) corroded from the inside out. You may not be able to see it without cutting the outer shell of this harness, but you will see the green oxidized copper powder where the problem is. What I did was cut out this length of wire and replace. You will find that there are other wires that will start corroding also.

Hope this helps!

Posted on Mar 23, 2009

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SOURCE: battery sparks badly when trying to attach a battery charger

As long as your attaching red to + and black to - you'll be fine. If you don't want sparks don't turn on your charger until after you connect the wires. Be sure to remove the negative cable to your car before charging or you can damage the computer in the vehicle.

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Trying to charge battery for first time. It says connect two red connectors. Do you charge it first then connect the connector afterwards?

1. I assume this is a car battery so the first thing you do is to disconnect the vehicle cables from the battery terminals. The negative first and then the positive. The positive terminal is marked with a plus sign ...+ ... When refitting the cables to the
battery after it is charged you fit the positive cable to the positive battery terminal(+) first and fit the negative(-) last.

2. Now that the battery is unconnected from the vehicle you can fit the charging cables to the battery terminals. The charger you have should have 2 cables leading from it , a positive with a red plastic insulation on the clip and a negative cable probably with black insulation on the clip.The instructions with the charger will tell you in which order the cables are to be attached to the battery and the order you remove them. Each of the 2 cables has to be clipped onto the correct battery terminal. The positive cable(+) from the charger goes to the positive battery terminal (+)and the negative cable(-) from the charger goes to the negative battery terminal(-).

3. Once the cables from the charger are properly connected to the battery, you can plug in the charger and turn on the power.

4. Batteries generate explosive gasses when being charged and it only takes one small spark to ignite them. Don't reconnect the battery after charging for a half hour or so and make sure the area where you are charging is well ventilated.

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Hi Richard:

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How to charge a car battery while battery is in the car

No, do not disconnect your car's cables. Connect positive cable to positive one on charger cables, & negative to negative. Attach to DEAD battery FIRST. Then attach to car that's giving you a charge. BOTH CARS MUST BE OFF DURING ATTACHING PHASE. Then the car giving you a charge must start theirs. Let both sit like this for a few minutes (usually 3-5 minutes is plenty). Then try starting your car. If not charged enough, turn yours all the way off & continue charging for longer period of time. YOU DO NOT REMOVE THE CAR's OWN CABLES AT ANY TIME DURING OR AFTER THIS PROCESS, BUT ONLY WHEN A NEW BATTERY IS BEING PLACED IN YOUR CAR.

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My dead battery will only charge when i disconnet the + cable from the battery. as sson as I attache the +cavble back and battery charger wont charge the battery.

This is a strange one!
The best way to charge the battery is with it disconnected.
But saying that it should charge with it connected.
The only thing i can think of is not a good enough connection between the charger and the +cable
Anyway i hope this is the answer to the problem
John ( South Wales uk)

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Left overnight truck wouldn't start. with charger on it ok, but left standing for 4 hours, no start. Changed primary battery still same. disconnected both negative terminals overnight and today both...

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I am removing thestarter


Section 03-06A: Starting System, Gasoline Engines 1996 F-Series and Bronco Workshop Manual
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  1. Remove attaching bolts and starter motor shield.
  1. stj~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: When disconnecting hardshell connector at starter motor solenoid S terminal, grasp the plastic shell and pull off. Do not pull on wire. Be careful to pull straight off to prevent damage to connector and S terminal. If any part of connection is damaged, replace damaged components.
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