About 50 years ago, I read a (science fiction, because the only fiction I read was science fiction) novel in which a character advised: "never trust machinery more complicated than a knife and fork." I will add: communist Chinese electronics doubly so. The funny thing is, I have a few boxes of the communist Chinese stuff around here, because high tech has been my hobby, and my career, and because I can't afford better. So I guess it depends upon what the meaning of "trust" is. Last summer, I stuck a Daly 100A BMS on a pack of 8 60280 cells I had added to my mobile solar power testbed and haven't looked closely at it since (I got it running, my means of plugging in the thermocouple which had unaccountably gone missing, or was never included, somewhere between communist China and my testbed). It was "cheap" (more so last summer than today, apparently) so there is no bluetooth monitoring to worry me. Do I trust it? Yes, and no. It's a testbed, so, if it destroys a cell or two, well, that's the test result. I can infer that it's not doing anything too terrible by observing the readings on the cheap communist Chinese meters I have attached to the output. Do I depend upon it working? Not exactly. Do I have spares? Definitely. As we say in Silicon Valley (at least we did, before the dark times. before the dot-com boom, and Zuckerberg's self-fulfilling prophecy, which, apparently, made me unemployable in Silicon Valley big tech twenty years ago, and therefore, not, necessarily, eh, hip to the latest lingo): "You can never have too many backups". If they don't say it now, I say it's timeless wisdom, in the same class as Heinlein's bon mot, and transferable from software to hardware.
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