If you aren't going to use a solid state cap that can't ever leak a corrosive substance onto the board, then why trade a sleep time of months for a sleep time of days?
On Jan 4, 2018 10:20 AM, "Fugu ME100" <b4me...@hotmail.com> wrote: > My two cents worthŠ. > > In terms of supercaps it depends on the type. If they are electrolytic > supercaps then they have a lifetime of about 10-20 years, the same as > NiCds, depending of course on how they are used. If they are abused > thermally or electrically then they have to be derated and their lifetime > can be drastically reduced. They can leak especially the cheaper versions > that many people use to replace the memory batteries. In the memory > backup application they are probably well within their performance limits. > Current is one of the biggest derating factors, either charge or > discharge. > > The NiCds have a similar life span of 10-20 years depending of course on > the quality of manufacture. All the Ts and NEC machines are well past > their NiCd lifetimes and they could fail or just keep going for a little > longer. The only way to tell is to visually inspect them and measure > their charged voltage. They should show around 3.6V, if they are charged > and at a lower voltage then they are failing. Ones I have seen fail to > charge beyond 1V. > > Storage is a good question. I was thinking of packing mine in sealed > plastic bags with a desiccant to reduce the humidity. Then storing them > in a bedroom closet to keep the temperature as constant as possible and > out of the light. I would not store them in an attic, basement or garage > where there could be large variations in temperatures. I am quite > concerned about the LCD screens which might suffer the most under extreme > temperatures. > > > On 4/1/18, 4:16 AM, "M100 on behalf of VANDEN BOSSCHE JAN" > <m100-boun...@lists.bitchin100.com on behalf of > jan.vandenboss...@vivaqua.be> wrote: > > > > >I have some 10+ Model Ts, 100, 102 ,200 ,O.M-10 ,N.8201. But so far, I > >have never changed the NiCd (?) battery in any of my machines. > > > >Now, should I be worried? Most of the machines I have are simply in > >storage. (cold & dry) Typically, I launch 1 or 2 machines (always the > >same ones) maybe once every 2-3 months. So, they don't get much usage. > > > >How can I tell that the backup-battery is going on the machines that I > >use? > >And those I don't use, are they safe? > > > >The caps that can replace the batteries, are they indistructible, or will > >they leak, explode, desintegrate, ... too ? > > > >Greetings from the TyRannoSaurus > >Jan-80 """"" > >@ work ( / \ ) > >--------------.ooo--(_)--ooo.--- > > > >> -----Original Message----- > >> > >> Would this be suitable for a model 100? > >> > >>https://nam02.safelinks.protection.outlook.com/?url= > https%3A%2F%2Fvetco.n > >>et%2Fproducts%2Fsuper-capacitor-100000-956-f-5-5-& > data=02%7C01%7C%7C91334 > >>bb404b844f9974008d5535c2b58%7C84df9e7fe9f640afb435aaaaaaaa > aaaa%7C1%7C0%7C > >>636506577682022520&sdata=hN4tohczUgzmArviCvw2f5xrDvg84Y > fwf3d6bNLaP2A%3D&r > >>eserved=0 > >> volts?taxon_id=1892 > > > >The primary problem with this one is the lead spacing is too close - it's > >5mm but the original battery is about 3/4 of an inch long with the pins > >at each end (approximately 19mm, although I haven't precisely measured > >the hole spacing on the PCB). If the cap had longer leads or if the > >spacing were close to 19mm you could bend them to fit. > > > >It would be really handy to find a cap in this form factor which would > >just drop into the existing holes, although the diameter might be too > >large for the available space on the PCB. The one I used (on Kurt's > >recommendation - > >https://nam02.safelinks.protection.outlook.com/?url= > https%3A%2F%2Fwww.ebay > >.ca%2Fitm%2F5Pcs-Lot-5-4V-1-5F-1-5Farad-Super-Capacitor- > Supercapacitor-Ult > >racapacitor-EDLC%2F262404152018%3FssPageName% > 3DSTRK%253AMEBIDX%253AIT%26_t > >rksid%3Dp2057872.m2749.l2649&data=02%7C01%7C% > 7C91334bb404b844f9974008d5535 > >c2b58%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0% > 7C636506577682022520&sdat > >a=Xunx%2F4DOJ%2Ft9kGJ%2B00PJw2haI3NyJKZFdWQj5QISlP8%3D&reserved=0) had > >long leads which I just bent as needed to fit the holes. In my M100 I > >laid it on its side on top of some other components to the right; in my > >T200 there was enough free space above it to let it stand vertically in > >the same spot where the original battery was. > > > >I'm not sure if there are any other electrical considerations, but afaik > >a cap this size ought to work... expect shorter memory/RTC retention > >times than we've seen with a larger cap, but I'd expect at least 30-60 > >minutes in an M100 and maybe 15+ minutes in a T200 (these are wild > >off-the-top-of-my-head estimates based on what I've seen in my own > >machines with a 1.5F cap). The upside of a smaller cap would be a > >shorter charge time, which can be kind of a pain in the T200 when > >starting it up with zero charge in the cap. > > > >I guess the ideal supercap for easy fitment would be something with axial > >leads, maybe 15mm or less in length, or one in the same form factor I > >used but not quite as tall. > > > > > > > > > > > > > > > > jim > >[https://nam02.safelinks.protection.outlook.com/?url= > http%3A%2F%2Fwww.viva > >qua.be%2Ffacebook.png&data=02%7C01%7C%7C91334bb404b844f9974008d5535c > 2b58%7 > >C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636506577682022520&sdata= > adlO0 > >PnB0XAgi16Q8DFvcTLX4hhS%2BTSxpgyp36iMOPQ%3D&reserved=0] Rejoignez-nous > >sur Facebook - Volg ons op Facebook > >DISCLAIMER > >Pensez à l'environnement, n'imprimez cette page et ses annexes que si > >c'est nécessaire. Ce message électronique, y compris ses annexes, est > >confidentiel et réservé à l¹attention de son destinataire. 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