Differences

This shows you the differences between two versions of the page.

--- ideas:power_supply [2009/11/14 13:02] – spikeuk
+++ ideas:power_supply [2011/10/20 08:24] (current) – rocketboy
@@ Line 9: / Line 9: @@
 {{:ideas:2cr5.jpg|:ideas:2cr5.jpg}}
-  * **Lithium Iron DiSulfide** (Li/FeS2) - e.g. Energizer E2 L91 or L92 - These are 1.5V batteries which can be used as a direct replacement for ordinary Alkalines. They have Good temperature characteristics  (down to -40 deg C).  As good if not better current handling characteristics to the Photo Lithiums. Similar (possibly better) energy density to Lithium Thionyl Chloride/Photo Lithiums.
+  * **Lithium Iron DiSulfide** (Li/FeS2) - e.g. Energizer E2 L91 or L92 - These are 1.5V batteries which can be used as a direct replacement for ordinary Alkalines. They have Good temperature characteristics  (down to -40 deg C).  As good if not better current handling characteristics to the Photo Lithiums. Similar (possibly better) energy density to Lithium Thionyl Chloride/Photo Lithiums. Energizer publish a comprehensive datasheet including temperature performance profiles for their cells [[http://data.energizer.com/PDFs/lithiuml91l92_appman.pdf|here]].
 {{:ideas:l92.jpg|:ideas:l92.jpg}}
-  * **Lithium Polymer** (Li-Poly) – normal voltage 3.7V – fair operating temperature range (down to –20 deg C) – 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 severe 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.
 {{:ideas:lipo.jpg|:ideas:lipo.jpg}}
-  * **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]]