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We specialize in the latest ultra high capacity external battery packs for
Laptops, Portable DVD Players, iPods, Cell Phones, Portable Satellite Radios,
PDA's and most other portable devices.
All of our external batteries feature premium quality super high density lithium
ion chemistry with an ultra portable and lightweight design. Our external
batteries are engineered from professional cutting edge research and development
efforts and GMP (good manufacturing practices) ensuring quality, safety and
effectiveness in order to provide you with the maximum reliability, durability
and run time.
130WH Mac & PC Compatible Laptop & Tablet PC External Laptop
Battery. Compatible with iBook G4 and PowerBook G4. MacBook Pro connector tips
are expected to be available sometime within the next month. 130WH Capacity,
19V~24V output. Tolerance up to 4.5A. Rechargeable lithium-ion batteries
are popular in laptop computers. Lithium-ion batteries support longer battery
runtimes than NiCd and NiMH technologies and hold a charge well when not in use.
Li-ion have an extremely high energy density; that is, they store more energy
than other types for a given size and weight. This is primarily because lithium
is one of the lightest metals.
Li-ion laptop batteries are normally constructed of several individual cells.
The cells are combined in battery packs of normally between 2 to 12 cells,
arranged in serial and parallel connections resulting in high voltage ratings.
Capacity ratings generally go from 2000mAh to 6000mAh or more. The higher the
capacity rating, the longer the battery lasts in a given application.
Lithium is a unstable substance, and when first released, rechargeable
lithium-ion batteries had problems. After a number of discharge/recharge cycles,
it was found that metallic lithium plating would occur on the lithium electrode,
causing a potential runaway condition resulting in a violent reaction. A vent in
the battery would prevent an outright explosion; however, extremely hot gases
would be released under these conditions, causing damage to the surrounding
equipment or even burns to individuals nearby. Several incidents of batteries
overheating and venting flames resulted in a number of recalls and redesigns in
early 1990s.
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