Dan - every cell is different. 4°C doesn't sound like a big deal to me. But its good to take notes and continue to investigate. How much extra temp is OK? Probably someone who knows more will reflect on that.
There is the can't sleep at night thing...if you are worried you didn't clean the posts well and it is troubling you, then there is no reason not to clean them up. Cells are expensive and care must be taken. It sounds like you have those little strap mounted BMS? I bought a used pack with those and there were a number that had desoldered wires/ pads separated from the printed circuit. They look like an accident waiting to happen to me. They are definitely fragile and require some extra care. On Fri, Aug 15, 2014 at 12:29 PM, Danpatgal via EV <[email protected]> wrote: > I have on my to-do list to clean up the connections. With the BMS modules > on > there it's just a pain and I have to be very careful (I know - if I had > done > it at the beginning ...). > > I noticed the temperature first while driving from the BMS (Lithimate Lite) > telling me one cell was getting over 40C. What was odd was I still got it > on a cooler day (in the 70s), so it made me suspect the connections. So I > checked a few of the bolt heads with my fingers for comparisons and noticed > a few much warmer than others (none "hot" to the touch, just very warm > instead of just warm or cool). I used the laser temperature gun just for > some idea on the number ... and my fingers didn't lie ;). Those few were > 4-5 C (10-12 F) warmer than the rest. > > I don't want to make a mountain out of a molehill, just wondered if there > might be others having similar issues with CALBs that I should be aware of > (bolts, straps, terminals ...) other than just a layer of corrosion on the > terminals. > > Thanks for the comments - Dan > > > > ----- > Dan Gallagher > http://www.evalbum.com/3854 > > -- > View this message in context: > http://electric-vehicle-discussion-list.413529.n4.nabble.com/CALB-bolt-terminals-getting-hot-tp4670981p4671002.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) > > -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do With your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140815/cd9f8a01/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)
