| Three main types of rechargeable
| |
| | are said not to suffer from the
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| batteries are used in newer technology
| |
| | "memory-effect" quite as much. Following
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| hand held devices. Scientists are
| |
| | the proper steps for charging and
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| constantly trying to develop batteries
| |
| | discharging in NiMH batteries is very
|
| with better technologies that make them
| |
| | important. NiMh batteries need smart
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| faster, more powerful, and more
| |
| | chargers which prevent them from
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| lightweight. In the past, the only type
| |
| | over-charging. It is also important that
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| of rechargeable battery available was a
| |
| | they are not run flat in a portable
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| lead-acid battery, which contains liquid
| |
| | device, which creates reverse charging,
|
| and must be kept ventilated in an upright
| |
| | which can completely damage the battery.
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| position. Though still used in autos and
| |
| | Most devices detect safe discharge
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| motorcycles, scientists have developed
| |
| | voltage and shut down automatically. In
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| gel-batteries, where the liquid is
| |
| | this case, NiMH batteries are much more
|
| semi-solid and will not spill. These
| |
| | effective in high drainage devices like
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| batteries, most commonly used in new had
| |
| | digital cameras, while NiCad batteries
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| held devices are nickel-cadmium
| |
| | are more effective in devices with a fast
|
| (NiCad),nickel metal-hydride (NiMH), and
| |
| | discharge rate such as power tools. NiMH
|
| the newest, Lithium Ion (Li-Ion)
| |
| | batteries are also used in hybrid cars.
|
| batteries.
| |
| | The newest and most powerful of all
|
| Nickel Cadmium, or NiCad batteries are
| |
| | rechargeable battery types is the Lithium
|
| the least expensive of the three types,
| |
| | Ion battery. When compared to NiCad and
|
| because it has the least power. They are
| |
| | NiMh batteries, Li-Ion batteries have the
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| primarily used in portable phones, power
| |
| | highest voltage density and the lowest
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| tools, and other hand held devices. They
| |
| | self-discharge rate. It is the smallest
|
| are more practical than lead-acid
| |
| | and most light-weight of all the
|
| batteries because of their increased
| |
| | batteries, but all the advantages make it
|
| power and light weight. They also have an
| |
| | much more expensive as well. New Li-Ion
|
| advantage over alkaline batteries which
| |
| | batteries are said to charge 10 times
|
| are not usually rechargeable. NiCad are
| |
| | faster than NiMH or NiCad batteries, and
|
| said to be the number one sufferer of the
| |
| | does so in a fraction of the time. Li-Ion
|
| "memory effect" which in fact is really a
| |
| | are extremely susceptible to high
|
| lazy battery effect, where the
| |
| | temperatures which can great shorten
|
| batterydischarges quickly after being
| |
| | their lifetime. Extremely high
|
| fully charged. A NiCad battery only lasts
| |
| | temperatures can also cause a Li-Ion
|
| 1000 full cycles, so eventually they need
| |
| | battery to explode.
|
| to be replaced.
| |
| | Different types of batteries have their
|
| NiMh batteries are next of the podium for
| |
| | advantages and disadvantages. While some
|
| newer, more powerful batteries. Though
| |
| | offer more convenience and higher
|
| similar to the NiCad batteries, NiMh
| |
| | capacity, there are still many
|
| batteries do not contain toxic cadmium,
| |
| | limitations facing the development of
|
| so they are considered more of an
| |
| | batteries. However, battery technology is
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| environmentally-friendly battery. They
| |
| | improving everyday to help portable
|
| are also higher capacity than NiCad and
| |
| | devices last longer.
|
