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ideas:power_supply [2011/10/20 08:16] – rocketboy | ideas:power_supply [2011/10/20 08:24] (current) – rocketboy |
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* **Lithium Polymer** (Li-Poly) – normal voltage 3.7V – fair operating temperature range (down to –20 deg C see [[http://www.ibt-power.com/Battery_packs/Li_Ion/Lithium_ion_tech.html]]) – excellent current handling characteristics – with AA sized cells (not that Li-Po cells are normally that shape) Capable of sustained loads of several 100s of milliamps and peak loads into amps. The big advantage of these cells is that they are re-chargeable (with the right charger). These have about half the energy density per unit weight of Lithium Thionyl chloride/Photo Lithium/Lithium Iron DiSulfide. Li-pos are well known for how easily they combust. Charging and discharging too fast, discharging too low and puncturing can all cause fire or explosions. | * **Lithium Polymer** (Li-Poly) – normal voltage 3.7V – fair operating temperature range (down to –20 deg C see [[http://www.ibt-power.com/Battery_packs/Li_Polymer/Lithium_polymer_tech.html]]) – excellent current handling characteristics. The big advantage of these cells is that they are re-chargeable (with the right charger). These have about half the energy density per unit weight of Lithium Thionyl chloride/Photo Lithium/Lithium Iron DiSulfide. Li-pos are well known for how easily they combust. Charging and discharging too fast, discharging too much and puncturing can all cause fire or explosions. |
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* **Lithium Ion** (Li-ion) - similar in most respects to Lithium polymer, but can operate at lower temperatures - down to -30 deg C | * **Lithium Ion** (Li-ion) - similar in most respects to Lithium polymer, see [[http://www.ibt-power.com/Battery_packs/Li_Ion/Lithium_ion_tech.html]] |
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