IMHO you should check them for correct voltage and replace them as necessary. If allowed to discharge, they may corrode and damage the PCB. I think the feeling around here is that the correct supercap may be better than the nicad battery, as well as the fact that the nicads are getting hard to find.
On 4 January 2018 at 02:16, VANDEN BOSSCHE JAN <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://vetco.net/products/super-capacitor-100000-956-f-5-5- >> 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://www.ebay.ca/itm/5Pcs-Lot-5-4V-1-5F-1-5Farad-Super-Capacitor-Supercapacitor-Ultracapacitor-EDLC/262404152018?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649) > 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 > [http://www.vivaqua.be/facebook.png] 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 l’attention de son destinataire. Si vous n'êtes pas le > destinataire de ce message, merci de le détruire et d’en informer > l’expéditeur. Toute divulgation, copie ou utilisation de ce mail est dans ce > cas interdite. La sécurité et l'exactitude des transmissions de messages > électroniques ne peuvent être garanties. > Denk aan het milieu; druk deze pagina en de bijlagen alleen af als het nodig > is. Dit e-mailbericht (inclusief zijn bijlagen) is vertrouwelijk en is > uitsluitend bestemd voor de geadresseerde. Als dit bericht niet voor u > bestemd is, wordt u verzocht het te wissen en de afzender te informeren. Het > is in dat geval niet toegestaan dit bericht te verspreiden, te kopiëren of te > gebruiken. We kunnen niet garanderen dat de gegevensoverdracht via het > internet veilig en nauwkeurig is.
