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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#8064A2'>Steve </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>and </span><span style='color:#C00000'>Frans</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><div><div><div><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#C00000'>Indeed a labtob charger is 20V DC 3,5 A charging current for 3,8 Ah ,but the battery is14,8 Volt .<o:p></o:p></span></p><p class=MsoNormal><span style='color:#C00000'>But between charger and cells you have 20 cm2 chips inside the battery and and 30 cm2 in the PC ….So supper uPcontrol and secret design !<o:p></o:p></span></p></div></div><div><p class=MsoNormal><br><span style='color:#8064A2'>The design of the battery pack electronics is actually for safety. The chemistry of the battery goes exothermic, if they overheat during the charge. This is prevented on the battery by a circuit that disables the pack if the cell voltage gets too low, or on overtemperature. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The BlackBerry Battery has electronics in it that asks the phone if it is a real BB. If it cannot answer a skill testing question the battery will refuse to supply power. Similarly the phones ask the battery for a password and if it is not supplied correctly, the phone will not accept power from the (fake) battery.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This means using an old BlackBerry Battery entails removing the electronics. The same will apply to PlayBooks when they start to become available. If this trend catches on (battery sales are jealously guarded by the manufacturers because fakes cause all sorts of problems) it will be difficult to re-use these resources.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>So, guys, are the instructions complete enough to be able to use these old laptop batteries properly and safely? Is the charger talking to the battery and changing its charging rate based on feedback?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></div></div></body></html>