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| 1. | NiMH battery | ||
| 2. | New Generation NiMH battery----Low Self Discharge Batteries | ||
| 3. | NiCd battery | ||
| 4. | Lithium-ion battery | ||
| 5. | Lithium Polymer battery | ||
| NiMH battery | |||
The voltage and performance of the NiMH battery is similar to standard
alkaline batteries in those sizes; they can be replaced for most purposes.
The ability to recharge hundreds of times can save a lot of money
and resources. |
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| New Generation NiMH battery---Low Self Discharge Batteries | |||
| Minamoto Ready-to-use NiMH batteries are developed under the state-of-the-art
technology in rechargeable batteries. They are ready to use when you
purchase them from the shop, just like primary batteries. After charged
they can keep 90% of its initial capacity after 6 months of storage,
and 85% of its capacity after 12 months of storage at 20 degrees Celsius. Besides the longer shelf life, they can be charged using any standard NiMH battery charger and can be recharged up to 1,000 times. As Nickel Metal Hydride chemistry, it is memory free operation and environmentally friendly. The new NiMH batteries are ideal not only for devices that you do not use all the time, but for power intensive devices like LCD TV, Electric Toothbrush, Shave, Camera Flash, Digital Camera as well. |
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| NiCd Battery | |||
| The nickel-cadmium battery is a popular type of rechargeable battering
using the nickel hydroxide and metallic cadmium as the active chemicals.
The principle advantages of NiCd over other rechargeable types is
lower weight for a given quantity of stored energy, good charging
efficiency, small variation in terminal voltage during discharge,
low internal resistance, and non-critical charging conditions. Sealed NiCd cells may be used individually, or assembled into battery packs containing two or more cells. Small NiCd dry cells are used for portable electronics and toys, often using cells manufactured in the same sizes as primary cells. When NiCds are substituted for primary cells, the lower terminal voltage and smaller amperehour capacity may reduce performance over primary cells. NiCd batteries have a niche market in the area of cordless and wireless telephones, emergency lighting, model airplanes, as well as power tools and electronic hand-held pleasure devices. With a relatively low internal resistance, a NiCd battery can supply high surge currents. This makes them a favorable choice for remote controlled electric model aeroplanes, boats and cars, as well as cordless power tools and camera flash units |
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| Lithium ion Battery | |||
| Lithium Ion Rechargeable Battery has overcome many shortcomings of
conventional rechargeable batteries. It delivers and maintains a stable
operating voltage of over 3.7V even until final discharge. Discharging
three times as much voltage as Ni-Cd or Ni-MH battery, its high energy
density enables portable devices to be made smaller and lighter. Also,
Lithium Ion Battery provides stable and consistent discharge throughout
a wide temperature range with limited self-discharge to less than
10% of the original capacity per month. It has no memory effect that
reduces discharge capacity and has superior recharging properties
for a service life of about 500 charge/discharge cycles, i.e. much
more economical than primary batteries. Lithium Ion Rechargeable Battery
is suitable for cellular phones, digital still cameras, portable AV
equipment, mobile games, PHSs, PDAs and wireless equipment. Tips for prolonging Li-ion battery life *Unlike Ni-Cd batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a longer time, they should be brought to a charge level of around 40%. Lithium-ion batteries should never be "deep-cycled" like Ni-Cd batteries. * Lithium-ion battery should never be depleted to below their minimum voltage, 2.4v to 3.0v. * According to one book, lithium-ion batteries should not be frozen (should not be stored below -40 C), because most lithium-ion battery electrolytes freeze at approximately ?40 C (this is much colder than the lowest temperature reached by household freezers, however). * Li-ion batteries should be bought only when needed, because the aging process begins as soon as the battery is manufactured. * When using a notebook computer running from fixed line power over extended periods, the battery should be removed and stored in a cool place so that it is not affected by the heat produced by the computer. |
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| Lithium Polymer Battery | |||
Lithium-ion polymer batteries have technologically evolved from lithium-ion
batteries and have comparable energy density to lithium ion batteries.
Today, demand is rising for lightweight and thin portable device.
Similarly, there is a demand for a thin, lightweight battery for these
applications. Lithium-ion polymer batteries are developed for this
purpose. |
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