Power or energy cannot be measured in volts. The only thing you can say is one - the 9 volt battery - has a higher voltage than the other, the 6 volt battery.
If you are asking about the power or energy contained in a battery, then the amount iof energy it can supply depends mostly on its physical size that is determined by the battery "type".
Sure. But not much water, a 9 volt battery has very little power (energy).
Batteries such as AA, AAA, D, and C are actually single cells. A battery is a collection of cells put together to deliver a higher voltage or current than a single cell. A PP3 9 volt battery is in fact a true battery as it is made up from 6 separate 1.5 volt cells. However the term battery is so often used to describe a single cell that it is nothing more than pedantic to correct it to "cell", a term than few people are familiar with.
Charger Output Voltage versus Battery VoltageNO, the output voltage of a charger must be greater than the rated voltage of the battery, usually at least one and a half to two volts difference.
the device may not work
no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
Buying a six volt battery is better than 12 volt. If you buy the 6 volt takes up less power so it holds more.
Yes, it has twice the voltage power.
yes more voltage
what is the number of turns in the primary and secondary coil for 12 volt battery charger with 220 volt power supply> what is the number of turns in the primary and secondary coil for 12 volt battery charger with 220 volt power supply>
Yes
use two 12 volt batteries in series.
Sure you can. But consider what could happen if you did. If precision of time or speed was built into this 6-volt system, a 12-volt battery will make it work faster until something shorts or burns out. If you need more lasting power for the 6 volt system, you should consider putting two 6-volt batteries in parallel to power your 6-volt system.
It will be a 12 volt battery.
No, but it can power one
No. It requires more that 8.4 volts to charge a 8.4 volt battery. If the 8.4 volt battery is discharged to less than 7.2 volts then it might charge up to 7.2 volts but no higher. Once the voltages are the same then current stops flowing and charging stops.
A D cell battery has a voltage output of 1.5 volts, while a 9 volt battery produces about 9 volts. This is just the potential energy though. D cells provide far more current for a longer time then a 9 volt battery. In terms of overall power output, a D cell in give you many times more power than a 9 volt battery. Physical size, in this case is a good indicator as the material inside is the same.
The volts on cordless drills are based on the battery power. The volt rating reflects the battery that is in the drill.