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Li-Polymer Battery Facts
The Lithium-Polymer battery is a variation of the Lithium-Ion battery, which is why it's also called the Li-Ion Polymer battery. The difference is the Lithium-Polymer has a gelled electrolyte instead of a dry electrolyte and separator. This allows for the slimmer battery (smaller form factor) in demand for cell phones, which is why this battery was developed.
It doesn't have more capacity than a similarly-sized standard Li-Ion battery (it has actually a bit less). It just fits better into small portable devices.
One advantage of the Li-Ion and Li-Polymer battery is it can accept partial charges without degrading the battery or developing "memory." Because these batteries are sized very small to fit into very small devices, this is no small advantage. It's a crucial one (see the tips and a caution at the end of this article).
People want devices that have sound, color, fast processors, and other power-hungry features or components. They also want this device to fit into a pocket. To accommodate these requirements, something has to "give." And that is invariably the battery.
If you want whiz bang features and small size, you can't have super-long battery life. Period. We're up against the laws of physics. But you can have sufficient battery life. For example, properly charge an iTravl battery and the unit can run all day.
Facts about battery size vs. performance:
Essentially, you are storing a charge in the physical materials of the battery. To store more charge, you need more material. And that material adds both size and weight. But nobody wants to carry a brick around. Do you?
The iTravl battery is a Lithium Polymer. We have had a few complaints that the battery doesn't seem to hold a charge. But we have evaluated several iTravl batteries and also compared them against the batteries in other devices and find the batteries hold a charge just fine.
When the user basically does everything possible to drain the battery as quickly as possible, then, yes, the battery is going to seem like it just doesn't last. There is no getting around this, because the battery has only so much capacity.
What you can do:
Caution: Do not charge Li-Ion (or Li-Polymer) batteries longer than 24 hours. Think in terms of "sip" not "drown."
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