Re: [57north-discuss] Fake CR2032 batteries.
On 27/10/14 19:38, Peet42 wrote: [...] OK, I've been building computers for the past 35 years :-) Only two years longer than me, then. (I was building Acorn Atoms from kits in late 1981) I was only *paid* to do it (on and off) for twenty years. :-P Hi, Peet. [Monty Python voice] You were lucky: We 'ad t' mek our computers out o' cardboard, bottle-tops and sticky-back plastic... I'm also a veteran of the Acorn Atom era and I had an early serial no. BBC Micro because I put myself on a list to get one for teaching when I worked as a post-doc at (then) Plymouth Polytechnic. We used the Acorn Atoms to teach a course about using laboratory microcomputers. On one occasion someone stole the cassette recorder, but left the computer! (Aside: The Non-rechargable motherboard batteries will explode is a myth, inasmuch as all the rechargable ones have pins or wires permanently attached to the battery to solder into the motherboard, while the non-rechargables all clip into a holder so it's impossible to fit a non-rechargable into a board that trickle-charges unless you're dumb enough to solder pins/wires onto the battery yourself...) The ML2032 is a rechargeable version of the CR2032 and, in my extreme ignorance, I thought that some of the server motherboards I'd salvaged in the past had used this type of battery and trickle charged it. I was just being cautious about it until I knew that the motherboards I have now do NOT trickle charge their batteries. However, they do stop them from discharging as long as the motherboard is powered up. The reason all mine had gone flat was not that they were out of date, but they had been powered off for over two years with their batteries in the socket. Bye, Tony. -- Minke Informatics Limited, Registered in Scotland - Company No. SC419028 Registered Office: 3 Donview, Bridge of Alford AB33 8QJ, Scotland (UK) tel. +44(0)19755 63548http://minke-informatics.co.uk mob. +44(0)7985 078324mailto:tony.tra...@minke-informatics.co.uk ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
On 26/10/14 09:44, p...@myflat.org.uk wrote: Excuse the slow response; I've been in hospital and I'mk just catching up. They're not fake, they're just old. A CR2032 will die after just over 5 years whether it's in a motherboard or on the shelf. The pricing reflects how long it is since they left the factory. Thus, the RS ones are guaranteed to have more than four years of life left; if they're on the shelf for more than a year they sell them on to wholesalers to repackage them and sell them more cheaply. When they've been on the wholesaler's shelf for two or three years they sell them on to the likes of Poundland for pennies. Just clarifying... ;-) Hi, Peet. I'm not saying that doesn't happen, but I think there are fakes too: http://en.wikipedia.org/wiki/Talk%3AButton_cell#Fakes In any case, I took Rob's advice and bought from RS :-) Thanks, Tony. -- Minke Informatics Limited, Registered in Scotland - Company No. SC419028 Registered Office: 3 Donview, Bridge of Alford AB33 8QJ, Scotland (UK) tel. +44(0)19755 63548http://minke-informatics.co.uk mob. +44(0)7985 078324mailto:tony.tra...@minke-informatics.co.uk ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries.
Tony, your linked article talks about the difficulty in finding the mysterious Chinese factories churning out the real looking batteries.? The reason they look real is because they *are* real, and the Chinese distributors are just buying them at various points throughout their shelf life - there are no factories! I spent the best part of 20 years as a computer engineer, and one of the hardest things I found to get across to my customers was that they weren't saving money by buying a multi-pack of CR2032s as when the one they put in the motherboard died all their spares would be dead too. Peet ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries.
On 27/10/14 13:02, Peet42 wrote: Tony, your linked article talks about the difficulty in finding the mysterious Chinese factories churning out the real looking batteries. The reason they look real is because they *are* real, and the Chinese distributors are just buying them at various points throughout their shelf life - there are no factories! Hi, Peet. So, we have a lot of 'dodgy' CR2032 batteries on the market anyway... I spent the best part of 20 years as a computer engineer, and one of the hardest things I found to get across to my customers was that they weren't saving money by buying a multi-pack of CR2032s as when the one they put in the motherboard died all their spares would be dead too. OK, I've been building computers for the past 35 years :-) A lot of that time, like now, I've been resurrecting old computers for re-use and I often find the batteries are flat because the systems have been powered off for a long time - It's not just the battery shelf-life. In the past, I've always bought brand-name batteries from a reputable supplier and, I must admit, I was absolutely astonished when Iain got CR2032's at such a low price from PoundLand - Well, now we know why! I also laboured under the embarrasing misapprehension that most CMOS RAM batteries were 'trickle' charged until I looked into it recently. Rechargeable batteries were used in the past and we were warned that the PC charging circuit used might make disposable batteries explode! Maybe this was just an urban myth, like the 'fake' batteries? Bye, Tony. -- Minke Informatics Limited, Registered in Scotland - Company No. SC419028 Registered Office: 3 Donview, Bridge of Alford AB33 8QJ, Scotland (UK) tel. +44(0)19755 63548http://minke-informatics.co.uk mob. +44(0)7985 078324mailto:tony.tra...@minke-informatics.co.uk ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
Excuse the slow response; I've been in hospital and I'mk just catching up. They're not fake, they're just old. A CR2032 will die after just over 5 years whether it's in a motherboard or on the shelf. The pricing reflects how long it is since they left the factory. Thus, the RS ones are guaranteed to have more than four years of life left; if they're on the shelf for more than a year they sell them on to wholesalers to repackage them and sell them more cheaply. When they've been on the wholesaler's shelf for two or three years they sell them on to the likes of Poundland for pennies. Just clarifying... ;-) Peet McKimmie Aberdeen, Scotland ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
On Thu, Oct 23, 2014, at 01:04 PM, Tony Travis wrote: Back to the main topic of my message: I had *NO* idea how widespread fake CR2032's are on eBay/Amazon never mind PoundShop. I'm looking for genuine name-brand CR2032 replacements if anyone has recommendations? I'd probably go with RS. Their batteries come with datasheets of what their capacity should be: http://docs-europe.electrocomponents.com/webdocs/0394/0900766b80394067.pdf RS are usually not the cheapest but for things where authenticity matters paying a bit more can be worth it for them to worry about the sourcing. Robert -- Robert McWilliam r...@allmail.netwww.ormiret.com Disclaimer: Opinions cited by me are not necessarily my opinions. Facts cited by me are not necessarily facts. ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
So, as usual, it was Ian? -- Andrea Faulds http://ajf.me/ ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
On 23/10/14 14:15, Andrea Faulds wrote: So, as usual, it was Ian? Hi, Andrea. Yes, of course, but I had no idea about fake CR2032 batteries either! I must admit that the Pound-Land batteries seemed to good to be true at the time and now we know why ;-) Bye, Tony. -- Minke Informatics Limited, Registered in Scotland - Company No. SC419028 Registered Office: 3 Donview, Bridge of Alford AB33 8QJ, Scotland (UK) tel. +44(0)19755 63548http://minke-informatics.co.uk mob. +44(0)7985 078324mailto:tony.tra...@minke-informatics.co.uk ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
Re: [57north-discuss] Fake CR2032 batteries
On 23/10/14 13:53, Robert McWilliam wrote: [...] RS are usually not the cheapest but for things where authenticity matters paying a bit more can be worth it for them to worry about the sourcing. Hi, Robert. I took you advice and ordered 25 from RS. Thanks, Tony. -- Minke Informatics Limited, Registered in Scotland - Company No. SC419028 Registered Office: 3 Donview, Bridge of Alford AB33 8QJ, Scotland (UK) tel. +44(0)19755 63548http://minke-informatics.co.uk mob. +44(0)7985 078324mailto:tony.tra...@minke-informatics.co.uk ___ 57north-discuss mailing list 57north-discuss@lists.57north.co http://lists.57north.co/listinfo/57north-discuss
