Nice blogs, Tom. I think Venkat parallels what Lee and others have said on the list - don't charge and discharge to the limits. He also confirms that laptops overcharge. Same with my bicycle light and my cell phone and my..., I'm sure :(
It's not so clear to me why his laptop had so much trouble with the discharge limit. Regardless of algorithms, why wouldn't it simply shut down when the voltage reaches the bottom limit? Yes, it would need to run a bit longer to do the hibernation process, but that doesn't seem too significant to me. Still, the question remains as to how large a factor this is in Tesla's case. As Lee said, it's part of the problem. Are they really laptop cells, though, or something spec'ed by Tesla? How else can the cells be "murdered"? Peri -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of tomw Sent: 09 October, 2013 6:09 AM To: [email protected] Subject: Re: [EVDL] Range /"The other factor is, I'm fairly certain, that Tesla has a much better BMS than most laptops. Is that significant enough by itself? "/ Yes it is. Laptop batteries seem to be killed mainly by the BMS: http://thisweekinbatteries.blogspot.com/2010/02/pull-plug-your-battery-will- thank-you.html http://thisweekinbatteries.blogspot.com/2011/01/did-i-say-pull-plug-meant-to -say-do-not.html -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Range-tp4665484 p4665673.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ 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)
