It may destroy the battery or it may just blow the main fuse or it may do other damage. No way of knowing for sure what will happen.
On any car, switching the battery hookups will most likely fry your battery.
No, always connect the negative last.
If you connect positive to positive and negative to negative you will have a 9V battery with twice the current capacity in milliampere hrs than a single batteries. The load then goes between positive and negative paralleled terminals. If you connect one negative of one battery to one positive of the other battery and put the load between the remaining negative and positive terminals you have created an 18 V battery with the same milliampere hr rating as a single battery. If you connect one negative to positive of other battery and the negative of that battery to the positive of the first battery then both batteries with quickly drain and get hot in the process. Contrary to folklore or urban lefends, they do not explode.
The battery post positive terminal is where you connect the positive cable. Connect the negative cable to anyplace on the engine or chassis. Connect positive first and remove it last.
If you connect the terminals together with them unhooked from the battery and the engine off, yes that is also called a capacitive discharge.If you connect the terminals together with them unhooked from the battery and the engine off, yes that is also called a capacitive discharge.
the two terminals both conect to the electrode of the battery,so, you can conect two batteries with the two "terminals" for parallel circuit or series circuit. Rocky_B - Yes you can do this to give yourself some extra amps, but connect the negative to the negative of the other battery and the positive to the positive of the other battery - This is what previous poster meant by parallel. Warning: If this is for an automobile electrical system, you do not want to connect it in series; i.e. Positive to solenoid, negative to positive of other battery, negative of other battery to ground, as it would be supplying over 24volts to a 12volt system and may seriously mess up your electrical system or cause wire insulation to heat up, melt, and cause fires.
Connect the bad battery to a good battery with jumper cables. Connect the positive terminals first, then the negative terminals. Now try to start the engine. When finished, disconnect the jumper cables in reverse order.
Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.
Disconnect the negative - terminal first, then the positive + terminal. Unfasten the battery hold down clamp. When reinstalling the terminal connections connect the positive terminal first.
Connect a battery charger to battery positive to positive negative to negative
Best way would probably be to use a multimeter or voltmeter. Turn the meter on to volts DC and connect the probes to the battery terminals, if the voltage is shown as a negative, then switch the meter's probes around at the battery end so it shows the voltage as a positive reading on the meter. Mark the positive and negative terminals on the battery after this. Some car batteries have the negative terminal as the small post, but on some as the big post.
The man said it Always connect the positive + cable first to the battery. Then connect the negative- cable to the engine somewhere. Never connect the negative cable to the battery itself. Batteries vent hydrogen gas and which can ignite with the slightest spark. For this reason never, ever, connect the negative first and never connect the negative to the battery.