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| [[Image:RAPOSA_Battery.JPG|thumb|Batery used by RAPOSA]]
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| == Batteries ==
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| RAPOSA uses Lithium-ion Polymer batteries (Li-Po) with 4800mAh and 14.8V.
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| The primary difference between this batteries and other Lithium-ion is that the lithium-salt electrolyte is not held in an organic solvent but in a solid polymer composite such as polyethylene oxide or polyacrylonitrile.
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| Each battery is composed of 4 cells with 2400mAh and 3.7V each, in a 4S2P fashion (two 4 series packs in parallel).
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| [[Image:Raposa_4s2p.jpg|499x174px|4S2P Fashion]]
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| == Battery Charger ==
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| [[Image:RAPOSA_BATTERIES.jpg|678x345px|thumb|How to charge RAPOSA batteries using ULTRAMAT 10]]
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| Currently two all-purpose fast chargers from Groupner (ULTRAMAT 10) are used to charge RAPOSA batteries at the Mobile Robots Laboratory (8th floor, North Tower, IST Campus-Alameda).
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| To recharge RAPOSA batteries using ULTRAMAT 10:
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| * Connect the ULTRAMAT 10 power plug to an available power socket;
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| * Connect the battery plug to the ULTRAMAT 10 battery socket;
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| * Press ENTER (the first button from the right) two times.
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| If the ULTRAMAT screen presents the following screen (the current and voltage displayed in this image are irrelevant)
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| [[Image:ULTRAMAT_CRG.jpg]]
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| it means that it is charging. When finished, the ULTRAMAT 10 will beep for a few seconds and the following screen (again, the current and voltage displayed in this image are irrelevant)
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| [[Image:Raposa_END.jpg]]
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| will be presented.
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| For any other information regarding the ULTRAMAT 10 usage, please check this manual (in Dutch, English and French):
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| [http://clubcugnaux.free.fr/Page_notices_techniques/ChargeurGraupnerUltramat10.pdf Battery Charger ULTRAMAT 10 manual]
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| == See Also ==
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| *[[RAPOSA]]
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