[Qualifier: I am not an EV builder. I have only enjoyed driving the work of those that do.]
Engineers designing a product have a long-life, reliability goal when they release specs. If you dink or tinker around with what a product can do, you will find what it can not (letting the over heated smoke out, a fire, or it just stops working like the old filament light bulb). IMO, I would NOT push past a product's specs. I also strongly suggest you have the correct amount of heat dissipation cooling (i.e.: the right size heat sink), for its use, and adjust that amount upward if you are in the hotter areas of the world. Both of the following manual .pdf 's say to not connect it to a higher than 80VDC pack: http://curtisinstruments.com/Uploads/DataSheets/50265_123638E_RevC3.pdf Models 1236 and 1238 50265 REV C 3/16 (page 4 of 8 model ---- packV 2minA 1hourA 1238E-65XX 48–80 500 190 ) http://www.thunderstruck-ev.com/Manuals/1234_36_38%20Manual%20Rev%20Feb%2009.pdf 1234/36/38 Manual, p/n 37022 17 February 2009 Software version OS 11.0 (page 133 of 134 model ---- packV 2minA 1hourA 1238-65XX 48–80 550 155 ) Because you mentioned you already ordered a few too many li-ion cells, I suggest you test all the cells, keep the best of the lot that will provide 80VDC, and see if you can return or sell the unneeded ones. If you do decide to push your pack voltage, remember that additional voltage and or current beyond a product's design equates to additional power (Watts) being dissipated on its internal components (if it feels hot on the heat sink connection, it is really hot at the internal component connection, etc.). *Thus be sure to add much more heat sinking and cooling (more metal, and add cooling fans, etc.) to your EV design configuration. IMO any wild/out-of-design-spec claims you read on-line, should be suspected for their posted purpose (to increase sales from its author). Also, look at the date of the post (old posts may no longer be valid). I found one that referenced to a seller's claims, see http://www.diyelectriccar.com/forums/showpost.php?p=369814&postcount=13 I recommend you stick with manufacturer's design specifications, for a reliable EV with a long-life. For EVLN EV-newswire posts use: http://evdl.org/evln/ {brucedp.neocities.org} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/MAXIMUM-VOLTAGE-Curtis-1238-6501-tp4685858p4685863.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 Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
