You don't.
-v + 5 + 6v = 1 + 5v + 3Clean up and combine each side:(-v + 6v) + 5 = (1 + 3) + 5v5v + 5 = 4 + 5vSubtract 5v from each side:5 = 4.There is no solution.No value of 'v' can make [ 5 = 4 ].
6J
Unlikely. First off, I can't think of any battery chemistry that would reach 5V, which makes me think that it's not a charger but simply a power supply that you are talking about. And while it's possible to charge a battery that way, the power supply won't have any means of stopping the charge once the battery is full. So unless you're monitoring the charge by some other means, there's a real risk of overcharging and damaging the battery. Secondly, if it is a charger, using a charger rated for a lower voltage than the battery, it'll stop charging too soon, leaving you with only a partially charged battery. Third, while not impossible, 7 amps would be a lot to push from a 5V source. If it's correct, pushing 7 amps into a 0.6 amp-hour battery really isn't a good move. It'd be a too high charge rate.
Yes it will
No, you need at least 12v to charge 12v. Most alternators charge at 13-14 volts.
Yes as long as it is the right voltage: a 6v battery needs a 6v charger; a 12v battery needs a 12v charger. <><><> If you can set the battery charger's output to give either a 6 or a 12 volt output, then you must always remember to set it to 6 volts if you want to use it to charge a 6 volt motorcycle car battery.
No, underpowering will not "power" the device, it will not run. You must get an adapter that is 6V and (2A or higher) will be ok as well.
no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
The battery will attempt to charge the charger since the battery is at a higher voltage than the charger. Thus, the battery will simply discharge and generate heat. If you leave it plugged in long enough, eventually the battery will discharge to a point where it can maintain only 6V, where it will stay until you actually charge the battery.
No you should not do that. It will damage the battery and the battery will explode.
No, it will overcharge the battery and overtime destroy it.
The battery is a 12V car battery.