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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10-02-2007LAST POST
04-05-2007
04-05-2007
wuufer001
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04-05-2007
04-05-2007
zzinco79
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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.
04-05-2007
04-05-2007
ehhhwik
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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!! 
04-05-2007
04-05-2007
wuufer001
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do i connect + to + and - to - ....or....+to- and -to+?
04-05-2007
04-05-2007
777ER
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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.
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.
04-05-2007
04-05-2007
teknochild
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wuufer001 wroteseriously?do i connect + to + and - to - ....or....+to- and -to+?
go buy a trickle charger from autozone, someones going to get killed if you jump the car
04-05-2007
04-05-2007
SteveMD
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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?
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?
04-05-2007
04-05-2007
SoYank
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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:
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:
- Ensure the cars are NOT touching. You should be able to comfortably walk between them but do not stand between them during the jumpstart.
- Connect one red cable to the red positive (+) terminal on the source (live) battery. Hold the black cables away from the bodies of the vehicles. This is as much to prevent scratches as it is to prevent electrical connectivity.
- Connect the other end of the red cable to the red (+) terminal on the flat battery.
- Connect the black negative (-) cable to the metal body of the jumped vehicle away from the battery, ensuring the other end is not touching the source vehicle.
- Have someone in the vehicle ready to attempt to start.
- Connect the last black cable clamp to the metal body of the source vehicle, again away from the battery.
- Attempt to start the jumped car. If it fails, leave the cables connected, wait a couple of minutes while increasing the engine speed of the source vehicle above idle, and try again. Repeat as necessary.
- As soon as the car starts, remove the cables in the reverse order they were attached, black first. Ensure the cables do not make contact with the source vehicle until at least two clamps are removed.
- Once the car is started, go for a nice drive.
04-07-2007
04-07-2007
Scarabeo
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SoYank wroteExcellent advice - if you are jumping the E90, the positive connector is in the engine compartment. Always make the last negative connection to the body of the car...watched my father years ago blow-up a battery as the spark ignited the hydrogen gas..I wonder if the same hazard exists with these new fully sealed batteries?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:The danger in jump starts is that during the recharge process the battery will produce hydrogen gas that accumulates around the battery. When the last cable is attached, if all other clamps have good connectivity, there will inevitably be a small spark. By making this connection away from the battery you reduce the chances of any hydrogen igniting. You certainly don't want the car to mimic the Hindenberg.
- Ensure the cars are NOT touching. You should be able to comfortably walk between them but do not stand between them during the jumpstart.
- Connect one red cable to the red positive (+) terminal on the source (live) battery. Hold the black cables away from the bodies of the vehicles. This is as much to prevent scratches as it is to prevent electrical connectivity.
- Connect the other end of the red cable to the red (+) terminal on the flat battery.
- Connect the black negative (-) cable to the metal body of the jumped vehicle away from the battery, ensuring the other end is not touching the source vehicle.
- Have someone in the vehicle ready to attempt to start.
- Connect the last black cable clamp to the metal body of the source vehicle, again away from the battery.
- Attempt to start the jumped car. If it fails, leave the cables connected, wait a couple of minutes while increasing the engine speed of the source vehicle above idle, and try again. Repeat as necessary.
- As soon as the car starts, remove the cables in the reverse order they were attached, black first. Ensure the cables do not make contact with the source vehicle until at least two clamps are removed.
- Once the car is started, go for a nice drive.
04-07-2007
04-07-2007
E90330iS
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Nice, that's a very detailed procedure!
04-07-2007
04-07-2007
Driv3r
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teknochild wroteI think ill agree with you on this one!!seriously?
go buy a trickle charger from autozone, someones going to get killed if you jump the car
+1
04-08-2007
04-08-2007
BK
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SoYank wroteI 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?Here are the steps to jump starting a car:
To be clear, this is the procedure I thought was correct: + on dead, + on live, - on live, - ground on dead. Is this wrong?
10-01-2007
10-01-2007
wuufer001
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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?
10-01-2007
10-01-2007
Hawker 800XP
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10-02-2007
10-02-2007
10-02-2007
schneid4323
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I ground the negative when jumping, postive to pos, neg to frame.
10-02-2007
10-02-2007
schneid4323
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Scarabeo wroteOur battery is in the trunk, youll just blow up your lidExcellent advice - if you are jumping the E90, the positive connector is in the engine compartment. Always make the last negative connection to the body of the car...watched my father years ago blow-up a battery as the spark ignited the hydrogen gas..I wonder if the same hazard exists with these new fully sealed batteries?
10-02-2007
10-02-2007
533ogetnom
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teknochild wroteseriously?
go buy a trickle charger from autozone, someones going to get killed if you jump the car
10-02-2007
10-02-2007
schneid4323
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Wuufer do i need to teach you how to jump a car?
10-02-2007
10-02-2007
just4kickz
boku no namae ha...
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i like how the first responses dont really say shit.
10-02-2007
10-02-2007
Hawker 800XP
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wuufer001 wroteYes, any 12 volt system. $69.99.will that work with a mercedes?
10-02-2007
10-02-2007
wuufer001
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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:mad0259:
