## Wednesday, November 14, 2012

### Battery Arrangement and Power

Based on the applications,the arrangement of cells taking place.They are two ways.
1. serial arrangement-To increase the voltage
2. parallel arrangement-To increase the current

### 1.Parallel Arrangement

The four batteries in parallel in the upper diagram produces the voltage in one cell and they will supply the current four times of it.Current is the rate at which electric charge passes through a circuit, and is measured in amperes. Batteries are rated in amp-hours, or, in the case of smaller household batteries, milliamp-hours (mAH). A typical household cell rated at 500 milliamp-hours should be able to supply 500 milliamps of current to the load for one hour. You can slice and dice the milliamp-hour rating in lots of different ways. A 500 milliamp-hour battery could also produce 5 milliamps for 100 hours, 10 milliamps for 50 hours, or, theoretically, 1,000 milliamps for 30 minutes. Generally speaking, batteries with higher amp-hour ratings have greater capacities.

### 2.Serial Arrangement

The four batteries in series in the upper diagram produces the current in one cell and they will supply the voltage four times of it.Voltage is a measure of energy per unit charge and is measured in volts. In a battery, voltage determines how strongly electrons are pushed through a circuit, much like pressure determines how strongly water is pushed through a hose. Most AAA, AA, C and D batteries are around 1.5 volts.
Imagine the batteries shown in the diagram are rated at 1.5 volts and 500 milliamp-hours. The four batteries in parallel arrangement will produce 1.5 volts at 2,000 milliamp-hours. The four batteries arranged in a series will produce 6 volts at 500 milliamp-hours.

Courtesy: entertainment.howstuffworks.com

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