TÜV-Rheinland certifying previously recalled product in new packaging(EE,TÜV,..) - Page 1
Forum section: electronics / general

author: Max2018
author_rank: Newbie
timestamp: June 25, 2021, 10:16:08 pm
content: DELETED

author: amyk
author_rank: Super Contributor
timestamp: June 26, 2021, 03:48:41 am
content: Do you know what the exact details of the problem were?It's perfectly possible these are redesigns with the original problems solved.As Dave says, "Don't turn it on, take it apaaaart!"

author: m98
author_rank: Frequent Contributor
timestamp: June 27, 2021, 09:35:48 pm
content: So what is the company supposed to do? Go bankrupt? Have all managers commit seppuku?You don't just stop making a product if you had to recall a faulty batch. Maybe they've changed their cell supplier, updated their QA-process or limited the maximum charging current to be safe even for the worst cells of the batch?

author: tszaboo
author_rank: Super Contributor
timestamp: June 27, 2021, 10:01:32 pm
content: We really dont know why the recall happened. I had a cheap powerbank go boob, because the USB connector was absolutely flimsy, and probably damaged during soldering. It was possible with a (really) small amount of force to plug in a USB connector backwards, which broke the inner plastic part of the connector, and shorted out the power to ground. The wiring inside then melted in the next few seconds.Just replacing that USB connector with a higher quality one, and placing a PTC in the wiring/cell would've fixed it.

author: ebastler
author_rank: Super Contributor
timestamp: June 28, 2021, 05:47:10 pm
content: I dunno. Maybe the additional metal enclosure is indeed part of a safety fix? If the thing catches fire and blows up now, at least it will cleanly eject the yellow end caps instead of bursting all over the place.Just kidding though. It seems to me that you don't know enough about the original failure mode, as well as the technical changes made or lack thereof, to get as excited as you are about this.

author: rsjsouza
author_rank: Super Contributor
timestamp: June 29, 2021, 10:40:30 am
content: Quote from: ebastler on June 28, 2021, 05:47:10 pmI am inclined to think the same: this case is inconclusive.In a battery, the most important component is the battery itself, which might have been a bad batch, underspecified by the OEM or perhaps a specific construction aspect that was changed but is buried under its housing. That is considering the circuit is 100% identical and the current limit has not changed (a single resistor takes care of that).Would that mean that TÜV did not do shoddy work or was blindsided? Not at all, as there are many ways to fail a test and or circumvent it (depending on the product), but I imagine the OEM would be much more careful after such high profile recall/losses.

author: Siwastaja
author_rank: Super Contributor
timestamp: June 30, 2021, 10:24:14 am
content: This is one of the classic, "cut the bullshit, show me the proof" things. You may becompletely rightbut we don't know it, and even you don't know it. More detective work is needed. First gather enough evidence,thenmake it public.A comparative teardown of the recalled and "new" units would be the bare minimum to show us,1) where the original problem was,2) that it's still there completely unfixed.The fact that they are still in business is uninteresting.

author: tunk
author_rank: Super Contributor
timestamp: June 30, 2021, 11:48:34 am
content: QuoteCould you please provide some links? I found these, and they're not all identical:https://lygte-info.dk/review/Review%20USB%20battery%20box%20EE%20Power%20Bar%20E1-03%20UK.htmlhttps://youtu.be/YB7LEoWsuW8

author: esepecesito
author_rank: Regular Contributor
timestamp: July 08, 2021, 02:13:04 pm
content: To put it mildly, I would never, ever, blindly trust any certification. I have a very low opinion on this kind of certifications. Having known people working for a very known certification agency, I know the value of those seals.Better than nothing, yeah, at least the insurance is going to pay when your house is turned to ashes... trust my life? Never.