Rechargeable: Difference between revisions
→Lithium-Polymer (Li-Poly) - 3.7V/cell
m (→Lithium Iron Phosphate (LiFePo4) - 3.3V/cell: Oxygen is an element so gets a capital letter, in a "molecule" you have one lithium atom, one iron atom and four oxygen atoms. So it is LiFePO4) |
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===Lithium-Polymer (Li-Poly) - 3.7V/cell=== | ===Lithium-Polymer (Li-Poly) - 3.7V/cell=== | ||
Offers about a 20% increase in charge density over Li-ion, but again, offset by cost. These batteries are usually rectangular in shape and are used more often in MP3 players and cell phones than flashlights. | Offers about a 20% increase in charge density over Li-ion, but again, offset by cost. These batteries are usually rectangular in shape and are used more often in MP3 players and cell phones than flashlights. They can be made in almost any shape if required, instead of a metal can typical of lithium ion cells, they are a bunch of chemicals in a plastic bag usually with a rigid case around them. Several laptop batteries (notably, Apple's ones) are now made of LiPo cells rather than the 18650 cells typical of older laptop battery packs. This is unfortunate for the consumer as it makes it almost impossible to replace the cells in a battery pack as it will probably be impossible to source the same LiPo cells that the original manufacturer used. | ||
===Lithium Iron Phosphate (LiFePO4) - 3.3V/cell=== | ===Lithium Iron Phosphate (LiFePO4) - 3.3V/cell=== | ||