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| LG Battery BS |
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| EEVblog:
--- Quote from: wraper on February 01, 2020, 08:06:52 pm --- --- Quote from: nctnico on February 01, 2020, 08:02:33 pm ---I think the commercial is right to warn the common public against the dangers of unprotected lithium cells / lithium cells from shady suppliers. --- End quote --- IMHO more like covering their ass in case of lawsuits. They can now show that we warned consumers not to use them. --- End quote --- Yes, it's just basic (but pathetic) arse covering with the proliferation of 18650 in consumer gadgets. Although LG don't sell them direct to the consumer, their cells will be used by suppliers and even marketed as such. Nothing at all to do with repair as Louis is focusing on. |
| nctnico:
--- Quote from: thm_w on February 03, 2020, 10:14:04 pm ---Although 20mR I see in the datasheet seems very low. --- End quote --- 20m Ohm is not out of the ordinary for 18650 Li-ion cells. I've come across other Li-ion cells which have an internal resistance of less than 1m Ohm. |
| ogden:
--- Quote from: EEVblog on February 03, 2020, 10:35:28 pm ---Yes, it's just basic (but pathetic) arse covering with the proliferation of 18650 in consumer gadgets. --- End quote --- In what sense pathetic? Much better than Samsung video in their battery safety page. Amazing that nobody here blames manufacturers of inherently unsafe vape devices. Why just LG? Samsung disclaimer: "Samsung SDI’s RLIBC are not designed or manufactured for use in ANY vape or e-cigarette device.". Sony disclaimer: "Sony has great concern for the safety of our consumers. We recently became aware that some people may use our cylindrical lithium-ion VTC battery cells ("Li-Ion Cells") in a way that Sony does not intend for them to be used: in eCigarettes and vape pens. Sony has not tested Li-Ion cells in eCigs and vape pens." [edit] Speaking of pathetic arse covering - attach |
| thm_w:
--- Quote from: nctnico on February 03, 2020, 10:41:08 pm ---20m Ohm is not out of the ordinary for 18650 Li-ion cells. I've come across other Li-ion cells which have an internal resistance of less than 1m Ohm. --- End quote --- So the fact they they test with a 100mR shunt seems very relevant then. Lets say you have a 20mR cell: Dead short test theoretically its dissipating: 882W in the battery With 100mR added, its dissipating: 25W in the battery and 123W in the shunt In the case of a 1mR cell that would be even worse. |
| wraper:
--- Quote from: ogden on February 03, 2020, 11:11:39 pm ---Much better than Samsung video in their battery safety page. --- End quote --- :-// Dunno why you think so. Maybe you judge by artistic value. Samsung video actually says about unprotected cells and explains why. LG video is simply scaremongering with little information. |
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