You just need to disconnect the negative side of the battery, which should be labeled. You're gonna need a socket wrench in order to do it. And possibly some pliers with a rubber handle in order to get the cables out of the way easily without shocking yourself; because the battery does still produce power even after you take it off, this just stops the power from going to anything in the car. I just recently had to do this in order to install subs and an amp in my 97 passat. Hope this helps.
Disconnect the negative battery cable.
Power does not go to the battery, it comes from the battery, except when the car is running. At that time power does go to the battery from the alternator. Disconnect the + battery terminal.
Disconnect the negative battery cable.
It allow you to disconnect power to an electrical device with the flip of a switch.
Disconnect the battery cable, you do not have to touch the battery.
heres the procedure straight from the ford repair manualBattery CablesRemovalAll vehiclesDisconnect the battery ground cables. Disconnect the auxiliary ground cables.Disconnect the battery ground cableDisconnect the battery power cables. Disconnect the auxiliary ground cables.Disconnect the battery power cable.Disconnect the mass air flow (MAF) sensor electrical connectorDisconnect the positive crankcase ventilation (PCV) tube.Detach the air cleaner and secure to one sideDisconnect the ground cableDetach the battery cables from the retaining clipsDisconnect the starter motor solenoid electrical connectorDisconnect the engine ground cable. Raise and support the vehicle.Disconnect the starter motor electrical connectorsDisconnect the generator electrical connectorRemove the battery cables To install, reverse the removal procedure
You have to disconnect the negative cable from the battery.
remove the power chip or disconnect the battery and then disconnect it manually!!
If the battery of your MacBook is fully charged whilst you have the power cable plugged in, then the MacBook will switch to battery power instead of wasting electrical power from the plug. Once the battery is run down again, the Macbook will switch back to electrical power from the plug.
It's most probably the alternator. It's not putting any charge back in the battery. Can also be a dead cell in the battery or something is on pulling power from the battery.
The electrical energy provides power. When the chemical energy is depleted, the battery will not longer generate electrical energy.
Poor cable connections to the battery , or dead battery