Battery connection: Series connection Parallel connection

The following diagram shows these two kinds of structure: the Sony laptop battery in parallel and series

The above four IBM laptop battery in parallel, if each cell generates 1.5 volts, four in parallel voltage is 1.5V, but the current offer is four times higher than for a single cell. The following four Laptop battery are in series, so the connections will produce 6V voltage, can provide the same current and a single battery. When you buy a battery, the package will show the battery’s rated voltage and rated current.

For example the old digital camera to use four nickel-cadmium Toshiba laptop battery, each battery cell rated voltage of 1.25 V, rated current of 500 milliamperes milliamperes rated power that the battery inside, that is, to provide the total number of electrons. You can be rated milliamperes divided into many different forms, a 500 mAh battery can be generated in 100 hours 5mA current, generated in 50 hours, 10mA current, generated in 20 hours, 25mA current, or ( in theory) generated in 1 hour to 500 mA current, even in the 1A current is generated within 30 minutes.

But the battery did not have such a high linearity. First, all batteries have a rated maximum current – a 500 mAh Apple laptop battery can not be generated in 1 seconds, 30,000 mA current, because the battery’s chemical reactions can not be in such a short period of time took place, and at a higher the current intensity, the battery will generate a lot of heat, thus the loss of some energy. In addition, very low current intensity, many chemical Latitude D600 battery life may be higher than the expected life of long or short. However, in normal use within the rated mAh can be a degree of linear division.

The use of rated mA, we can roughly estimate the load cell at a given time under the continuous supply of power. If the four 1.25-volt, 500 mAh Latitude D620 battery in series together, then the final voltage of 5 volts (1.25×4), current of 500 milliamperes; if these four batteries in parallel together, then the final voltage of will be 1.25 volts, current is 2,000 (500×4) mAh. Have you seen the 9V battery’s internal structure? 9V Battery 9V battery is actually the internal structure of a six end to end composition of the 1.5V small Sony VGP-BPS9.