On 7 Mar 2021 at 4:06, jerry freedomev via EV wrote: > Next the BMSs > available are not reliable and can double costs so adding them likely would > increase danger, not cut it.I've heard of 100s of BMS failures killing > modules, packs but no Volt Module failures without them.
Do you know in what commercial products you find lithium batteries without a BMS? In the cheapest garbage made by dodgy Chinese sweatshops. One infamous example: the fire-starting hoverboards from a few years back. To be fair, though, what Jerry is suggesting here isn't exactly going without a BMS. He's suggesting that *you* be the BMS. That might be fine, except that humans aren't as rigorous about watching things as dedicated electronics are. We have this annoying human trait of getting inattentive and lax when nothing goes wrong for a long time. That's when you get in trouble. Now, I'm not a battery expert. But I think that it might actually MORE hazardous to manually babysit a reliable lithium battery than one that's not so reliable. Three years will go by, maybe 5, and nothing bad will happen. The battery will carry on working just about perfectly. Ho hum. You'll slack off the manual monitoring. And then ... EV batteries can supply a lot of power - several times as much as the electrical system in your home. And they have flammable material inside. Think about that for a moment. Oh, by the way, changing the subject - did y'all know that the EVDL has (ta- dah) terms of service? You'll find them here: http://evdl.org/pages/tos.html One of them states (in summary) that => Information posted on the EVDL comes from its subscribers, not from the EVDL itself; => Nobody in the EVDL "management" (which at the moment is just me and I'm just this guy) monitors or evaluates the posted information; => That - who knows? - information posted may be inaccurate, obsolete, incorrect, and/or dangerous. Not that I'm implying anything. :-\ As Zeus said to Narcissus, "Watch yourself." David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = It is difficult to get a man to understand something when his salary depends on his not understanding it. -- Upton Sinclair = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
