Cobalt Battery Info

POST:




10mm socket to remove battery cable nuts

Chevrolet Cobalt

Battery Info

Battery location is in the trunk.  Not under the hood.

There is also a post in the front under the hood in the engine bay near the fuse box to hook up jumper cables though.  Covered by a red plastic cap.

1.) To get the battery out you need to unscrew the bolt holding down the strap over the battery.
2.)  Disconnect the vent tube on the left side.  This tube allows battery acid air to vent to the outside of the car via a hole on the bottom of the trunk that it runs to.  Simply plug the tube back in when you replace a battery.
3.)  To make more room you can lift out the entire black plastic piece in the trunk that covers the area under the trunk lid itself, the plastic piece I am talking about is the thing you put your luggage on when you slide it into your trunk.  That entire thing can be lifted out.  It is a little difficult because it held in by a few metal clips like the front of the cars interior plastic pieces but with enough force can be separated giving a lot more ease of use room to put in a new battery.

The problem you will encounter is that the black plastic trunk liner piece has a long flat ridge intruding into the trunk and your battery sits under this so that when you try to remove or replace it is in the way.  You can do the job without removing the plastic you will just have to navigate the plastic ridge making things more annoying.



B.)  You need a battery with 650 cold cranking amps.  I will update with correct size and specs.

There is a correct way to attach the plugs from jumper cables, also a correct way to disconnect and reconnect a battery.

How To: Jump start a vehicle with a dead battery and another vehicle.

REMOVE BATTERY, disconnect battery cables.  Which one first, cables red or black.  Black is ground.  INFO>  The red positive connect is larger than the black negative.
Get a socket wrench and a 10mm socket.
Step 1.) Disconnect the Negative battery cable terminal first (Black), remove the negative battery cable, make sure not to let it touch other metal. isolate it.
Step 2.) Disconnect the Positive battery cable terminal second. (Red)

INFO> By removing the negative battery cable you are disconnecting the battery from the chassis of the vehicle.  If you begin to remove the positive side before the negative and your wrench would make contact with any part of the vehicle, then you could cause a short in the system.

Step 3.) Attach the Positive battery cable (Red) first.
Step 4.) Attach and tighten the Negative battery cable (Black) second.
JUMP Start car, Jump Start battery.

Step 1.) Place both vehicle in Park or Neutral and shut off the ignition in both cars.
1a.) Engage both parking brakes as well.
Step 2.) Attach one of the Red clips to the Red Positive terminal of your battery.
2a.) It has "POS" or "+" on it, or it's bigger than the Negative terminal.
Step 3.) Attach the other Red clip to the Red Positive terminal of the other car.
Step 4.) Attach one of the Black Negative clips too the Negative terminal on the other battery.
Step 5.) Attach the last Black Negative jumper cable clip to an unpainted metal surface on your car that isn't near the battery.  (ground)
5a.) Use one of the metal struts that holds the hood open.
Step 6.) Start the working vehicle and let the engine run for a few minutes.
Step 7.) Try to start your vehicle.
...If it won't start, make sure that the cables are properly connected and have the good Samaritan run his or her engine for five minutes.  Then try to start your car again.  If it still won't start, your battery may be beyond help.
Step 8.) If the jump works and your car starts, don't shut off your engine!  Drive around for at least 15 minutes to recharge your battery.  If the car won't start the next time you use it, the battery isn't holding a charge and needs to be replaced.

TIP!..HOW to use a digital multimeter or voltmeter to check battery charge.  See if it has enough charge to start your car. (Cold cranking amps is how battery lists it specific to each vehicles needs) diagnostic tools.
Step 1.) Turn the dial on the digital multimeter to the __blank sign__
Step 2.) Attach/touch the red meter probe to the red and the black to the black
Step 3.) Should read about 14 volts. amps.

First, set your voltmeter to 20 DC volts. ((Located top left middle setting between 5 of them)touch black negative to black, touch red to red. turn on headlights to provide a light load.  check reading

a.) At a reading of about 12.5 volts or higher means your battery has good charge.
b.) At a reading of about 12.3 volts means your battery is about 75% charged>
c.) At a reading of about 11.8 volts or lower means your battery is 25% or less charged.
d.) If you got a low reading, slow charge your battery to improve the chemical reaction of your battery and repeat the test.  If your reading doesn't go higher, replace the battery.
 
With the headlights on, at 80 degrees F, there should be a voltage drop of at least 11.8 volts (25%) charged, and ideally 12.5 volts, between the positive and negative terminals.
...You can also use a hydrometer to see if the specific gravity of the liquid inside the battery is between 1.265 and 1.299.  (...fix....add water?, some are maintenance free don't have removable caps and come with a charge indicator, a display on the battery top that tells you if the battery is fully charged (green dot), in need of a charge (no color visible), or faulty (yellow dot)

hydrometer can reveal not only the state of charge of your battery but also its overall health.

You'll know if your battery has failed.  But you can only use this tool on batteries with removable caps.  You can buy an inexpensive hydrometer at most auto parts stores.