I would expect that either the Tesla will not charge if the pack has gone below a certain safe level (just like laptop batteries) or that the protection in the pack itself disables the charger (so, not the charger or the Tesla control protecting the pack, but the pack itself. The pack consists of 11x9 series blades, each which carry 69 cells in parallel so a blade should be chargeable by measuring its voltage, checking it has not gone under a safe voltage of say 2V, and recharge with a 3.7V power supply
Regards, Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Hoegberg . Sent: Monday, February 25, 2013 12:12 PM To: [email protected] Subject: Re: [EVDL] Salvage Tesla roadster warning - buyer beware > Date: Sun, 24 Feb 2013 20:33:22 -0800 > From: [email protected] > To: [email protected] > Subject: [EVDL] Salvage Tesla roadster warning - buyer beware > > After Bruce's post I clicked a few of his links and found myself > staring at an Ebay posting of a Tesla Roadster, under $22k. > > but that could be caused by the 0% charge level in the battery pack, > so I considered that this should be dealt with quickly to avoid the > infamous bricking of the battery pack (even though I would not > hesitate to tear into the battery blades to charge each with a fixed > 3.7V power supply) -Is it not internal protection circuits? in each cells in the old tesla Roaster If so, ..it Will be hard to fix 7000 cells... :-) > Buyer beware! > Cor van de Water mmmmm... /John -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130225/ff5b 1672/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
