04-05-2007, 01:52 PM | #1 |
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How do you charge a Car's Battery
My friend's CR-V's battery is flat because the car hasn't been started for 2 weeks and now he doesn't know what to do. Should he just get a new battery or just charge it with another car? If charging will just solve the problem then how can it be done using another car's battery. How does the battery cables work, the + and - signs and the (black and red) color of the cables.
thanks
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04-05-2007, 02:01 PM | #2 |
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Use jump cable to start car (of course you need other car to do this) and let the engine running for about 20~30 mins.
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04-05-2007, 02:18 PM | #3 |
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yea, just jump start it and go for a short drive, run it through the revs to allow the batteries to be charged, the higher the revs, the faster the charging will occur, so REV THAT V-TEC!!
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04-05-2007, 02:22 PM | #5 |
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red is for +
black is for - (ground) Attach red + to postive terminal, black to the frame or the engine block, wait a few mins and start the car. It takes a 9 mile drive to charge the battery back up to normal.
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04-05-2007, 02:22 PM | #6 |
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seriously?
go buy a trickle charger from autozone, someones going to get killed if you jump the car
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04-05-2007, 03:27 PM | #7 |
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+1
But yes, connect the batteries in parallel. Pos to pos and neg to neg. Do it in series and watch your cables get hot. So you have never jumped a car eh?
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04-05-2007, 04:30 PM | #8 |
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How old is the battery? If it is more than four years old, I'd suggest getting a new battery. It will come charged so you'd just have to remove the old battery and insert the new battery, connecting the red cable to the positive (+) terminal and the black cable to the negative (-) terminal. Connect the black last. Ensure you remember to clamp down the battery onto its tray.
If you're in any way uneasy about jump starting your friend's car, you might want to use AAA (if you're a member) and then, as others have noted, go for a nice drive. If you are going to jump start the car yourself, please take heed to what 777ER wrote and connect the black cable to a metal part of the frame or body, preferably on the opposite side of the car from the battery. Never connect both cables straight to the battery terminals. Here are the steps to jump starting a car:
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04-07-2007, 03:39 PM | #9 | |
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04-07-2007, 06:09 PM | #10 |
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Nice, that's a very detailed procedure!
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04-07-2007, 07:34 PM | #11 | |
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+1
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04-08-2007, 12:14 AM | #12 |
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I always thought you connect both + and - on the live battery, and only grounded the - on the dead battery car. In your instructions, you have the - grounded on both cars?
To be clear, this is the procedure I thought was correct: + on dead, + on live, - on live, - ground on dead. Is this wrong?
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10-01-2007, 05:37 PM | #13 |
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happened again and its me this time, the warranty has passed and gonna cost me $170 to replace the battery if i the Merc guys in. i have to do it myself but the thing is the car is in the garage and i can't put in on neutral to back it out for me to charge. how else can i do it? the battery was replaced about a year ago. its a C320, will jump starting it mess up the computer?
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10-01-2007, 09:33 PM | #17 | |
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10-01-2007, 10:50 PM | #20 |
boku no namae ha...
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i like how the first responses dont really say shit.
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10-02-2007, 01:07 AM | #22 |
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will the battery charge if i disconnect it from the car and use the battery charger first then stick it back in the car and run the car? cause i live in an apartment and they don't have and wall outlets. this thing is just getting in to me
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