Li-ion battery, Polymer Li-ion Battery
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Rechargeable Lithium-ion batteries provide you with better performances, such as higher capacity, higher energy density, no memory effect, longer cycle life and faster charging.
In addition, lithium-ion batteries have less self-discharge rate, only 5~8% self-discharge of capacity per month.
Therefore, lithium-ion battery packs would offer you longer talking hours, smaller size, lighter weight and shorter charging time.
1. Polymer Li-ion Battery: Very low profile - batteries resembling the profile of a credit card are feasible: cell thickness measuring as little as one millimeter (0.039 inches) .
2. Flexible form factor - manufacturers are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.
3. Lightweight - gelled electrolytes enable simplified packaging by eliminating the metal shell.
4. Improved safety - more resistant to overcharge; less chance for electrolyte leakage.