I've got a 3F supercap (from Mouser, IIRC) in one of my 8201a's, and a 5F in the other.
Not sure how long they'll keep RAM alive - Weeks, at least, IME. My MO is to use Eneloops in the battery pack, which again IME, don't leak, & will keep RAM alive for years - The supercap picks up the load when the Eneloops are removed for recharging. Been doing this for 6 years now - Seems to work, so far. FWIW, the Eneloops are over 10 years old now, & still hanging in there... YMMV, of course. Jack On 1/4/18, Fugu ME100 <[email protected]> wrote: > Used this one previously: > https://www.jameco.com/z/NHB60H3A2H-Evergreen-Battery-Nimh-3-6Volt80Mah-2-Pins-Std-14-16Hrs-8Ma-6Hrs-16Ma_2137473.html > > Need the 2pin version. They also have a 3pin version which will not fit the > Ts. > > From: M100 > <[email protected]<mailto:[email protected]>> > on behalf of Tom Hoppe <[email protected]<mailto:[email protected]>> > Reply-To: <[email protected]<mailto:[email protected]>> > Date: Thursday, January 4, 2018 at 5:55 PM > To: <[email protected]<mailto:[email protected]>> > Subject: Re: [M100] supercap > > While on the subject, where is a good place to obtain a replacement > nicd/nimh for the M100? I have a supercap in mine just because they are easy > to find (I think mine came from Amazon). > > Tom > > > On Thu, Jan 4, 2018 at 12:48 PM, Fugu ME100 > <[email protected]<mailto:[email protected]>> wrote: > I agree I replace all mine with NiMH they are a) easy to get (at the moment) > and b) are a direct fit into the old spot. > > As someone said it is nice to remove the AAs and come back later and be at > the same point. Although if I store a unit for a long time I turn off the > backup too. > > From: M100 > <[email protected]<mailto:[email protected]>> > on behalf of Brian White <[email protected]<mailto:[email protected]>> > Reply-To: <[email protected]<mailto:[email protected]>> > Date: Thursday, January 4, 2018 at 2:42 PM > To: <[email protected]<mailto:[email protected]>> > Subject: Re: [M100] supercap > > I'm not asking why replace the old battery. I'm asking why use a cap if it > will have the same disadvantages plus an extra disadvantage of only > delivering a fraction of the run time? > > I replace all mine with new nimh batteries. > > I could see dropping to a few hours or days of sleep time if you gain the > advantage of a part that might last even longer than 30 years and there's > nothing to leak and corrode even if it does fail some day. Then you are > making the unit safe for indefinite long term forget about it storage. > > But an electrolytic cap makes no sense to me at all. > > -- > bkw > > On Jan 4, 2018 3:20 PM, "Peter Vollan" > <[email protected]<mailto:[email protected]>> wrote: > 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 > <[email protected]<mailto:[email protected]>> 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-<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fvetco.net%2Fproducts%2Fsuper-capacitor-100000-956-f-5-5-&data=02%7C01%7C%7C3acd5e9a731648aacf9f08d553b39fd0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636506953297126243&sdata=njgFo261ffkREk7vf2s9NanvMmYkmVS%2BXIOYw%2FDQqyw%3D&reserved=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://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<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ebay.ca%2Fitm%2F5Pcs-Lot-5-4V-1-5F-1-5Farad-Super-Capacitor-Supercapacitor-Ultracapacitor-EDLC%2F262404152018%3FssPageName%3DSTRK%253AMEBIDX%253AIT%26_trksid%3Dp2057872.m2749.l2649&data=02%7C01%7C%7C3acd5e9a731648aacf9f08d553b39fd0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636506953297126243&sdata=kSs8xatxnpozl6J4Zymq7wb%2BXn%2F76%2FL2QSn9NaIpfkA%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 >> [http://www.vivaqua.be/facebook.png<https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.vivaqua.be%2Ffacebook.png&data=02%7C01%7C%7C3acd5e9a731648aacf9f08d553b39fd0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636506953297126243&sdata=xzdfFaFukq8cV%2B79PqcvKc7l6i7nvAsApy9QqM1X6eo%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 l’attention de son destinataire. 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