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The cells together in series and parallel use of, this sounds like a very simple, but, follow some simple rules, you can avoid unnecessary problems.

In the battery pack is the number of cells together, and get the required Compaq Presario 2100 battery(compaq 2100 battery) operating voltage. If you need a higher capacity and higher currents, it should bring up the battery in parallel. There are also a number of battery packs, the series and parallel combination of the two methods. A laptop computer's battery may be to four 3.6V Li-ion batteries in series together, the total voltage reaches 14.4V; then, then the battery in parallel with two series together, so that the total battery capacity can be increase from 2000 mAh to 4000 mAh. This access method referred to as "two and four strings," which means: the two from the four cells in series with the battery packs together in parallel.

In watches, the backup memory and used cellular phone, the general use a battery. A nickel-based battery nominal voltage is 1.2V, alkaline batteries are 1.5V, silver oxide battery is 1.6V, lead-acid batteries is 2V, lithium batteries is 3V, while the lithium-ion battery is a 3.6V nominal voltage . The use of lithium-ion polymer and other types of lithium batteries, its rated voltage of typically 3.7V. If you want to be like the 11.1V voltage of this unusual, you have to put 3 in series with the battery. With modern microelectronic technology, we can already use a 3.6V Laptop Battery lithium-ion batteries for cellular phones and portable communications products with low power consumption power supply. In the sixties of last century, according to meters in the widely used mercury batteries, because of environmental considerations, has now been completely out of the market.

Nickel-based battery nominal voltage of 1.2V or 1.25V. Between them, in addition to market preferences, there is no any difference. Most of the commercial battery, the battery voltage of each section 1.2V; industrial batteries, aerospace batteries and military battery, the battery voltage of each section is still 1.25V.

Series

Require high-power portable devices, is normally Hp 319411-001 battery provided by two or more batteries in series up battery pack. If you use high-voltage batteries, conductors and switches can do a very small size. Mid-priced tools for the general use of industrial electric voltage is 12V to 19.2V battery-powered; while the use of high voltage power tools battery 24V to 36V in order to obtain greater power. Automotive ultimately ignition starter battery voltage from 12V (actually 14V) to 36V, or even 42V. These batteries are linked together by a 18 composed of lead-acid batteries. In the early hybrid vehicles, is used to power the battery pack voltage of 148V. Newer models use the battery packs, voltage up to 450V to 500V, the majority of nickel-based chemistry batteries. A voltage of 480V nickel metal hydride battery pack is a 400 nickel-metal hydride batteries in series. Some hybrid vehicles are also been tested with lead-acid batteries.

42 V car batteries are expensive and, compared to 12V battery, it will produce more on the switch arc. The use of high-voltage Hp F4812A battery battery pack caused by another problem is that there is likely to be encountered in a section of the battery pack inside the battery failures. It's like a chain, in series with the battery the more this happens, the higher the chance. As long as a battery problem, its voltage is reduced. In the end, a "disconnect" the battery may be interrupted current delivery. Have to replace the "bad" batteries is no easy task, because the new and old battery is not match each other. In general, the new battery's capacity is much higher than the old battery.

Let's look at an example of battery pack, section III battery voltage of only 0.6V, instead of the normal 1.2V (Figure 1). As the operating voltage drop, it is faster than the normal battery discharge end of the critical point to achieve the same time, it dramatically reduced the use of time. Once the device shut off due to low voltage power supply, the remaining three are still intact battery stored electricity can not be sent out. Then, section III cells also showed a great resistance, if at this time also with the load, then, will lead the entire chain, the output voltage of the battery will fall significantly. In a group of serial cell, a poor performance of the battery, like a pipe plug to plug, will have an enormous resistance to prevent current flow in the past. Section III will short-circuit the battery, which will enable the terminal voltage down to 3.6V, or, to disconnect the battery and cut off the current link. The performance of a battery depends on the worst piece of the battery pack inside the battery performance.

Parallel

In order to get more Hp F4809A battery power, you can put two or more batteries together in parallel. In addition to the battery in parallel together, another approach is to use the larger battery. As a result of the restrictions can choose to use the battery, this approach does not apply in all cases. In addition, the large size of the battery is not made of special batteries needed for the form factor. Most of the chemical battery can be used in parallel, while the lithium-ion batteries in parallel using the most suitable. Formed by the four cell battery packs in parallel, the voltage maintained at 1.2V, while the current and run time was increased to four times.

Compared with the cells in series, parallel circuit in the battery, the high-impedance or "open" little effect on the battery, but the battery packs in parallel will reduce the load capacity and shorten the running time. This is like a three cylinder engine is only started. The damage caused by a short circuit will be greater, it is because, in short, the failure of the battery will quickly run out of other battery inside power, and cause a fire.

Series-parallel

The use of such a series-parallel connection method, the design is flexible, you can use a standard battery size to achieve the required rated voltage Hp F4098A battery and current. It should be noted: The total power of the battery will not change the different connection methods. Power equals voltage multiplied by current.

Pairs of lithium-ion batteries, the series-parallel connection method are common. The most common kind of battery pack is 18650 (a diameter of 18mm, length 650mm). It features protection circuits that monitor the series together, each section of the battery, and thus its maximum practical voltage of 14.4 V. This protection circuit can also be used to monitor each section in parallel with the battery status.

Household batteries

Speaking earlier, the battery in series and parallel connection method for the rechargeable battery pack, the battery pack inside the battery is permanently welded together. In addition to the battery of several cells put into the battery room, in series together outside of those rules mentioned above also applies to household batteries. In bringing up a few batteries in series when used, must comply with the following basic requirements:

● to keep the battery connections clean. Up to four batteries in series when used in a total of eight connection points (the battery into the battery room of the connection point, the battery room to the next section, the battery connection points). Each connection point is there is a dell 4834T battery certain resistance, if the additional connection points, which may affect the overall battery performance.

● Do not mix batteries. When the battery power is low, replace all batteries. When used in tandem, to use the same type of battery.

● Do not recharge non-rechargeable batteries. Right to charge non-rechargeable batteries, it will produce hydrogen, which may cause an explosion.

● should pay attention to battery polarity. If you have a battery installed anti-polarity, and will reduce a whole string of battery voltage, rather than increasing voltage.

● End of the already fully discharge the battery from the electrical equipment used to remove suspended. Comparison of old batteries prone to leaks and corrosion situation. Alkaline batteries as opposed to carbon-zinc batteries, the problem is not so serious.

● Do not put batteries are placed in a box, so that short-circuit may occur. Battery short circuit can cause fever, and cause a fire. Please waste battery on small plastic bags, insulated with the outside world.

● similar to the original batteries alkaline batteries can be thrown into the ordinary rubbish bin. But the best is to send used dell 2834T battery batteries in recycling processing.