Hi. Does someone have instructions for DIY, SATII battery replacement? Care to share??? Thump --- Richard Strang <rstrang@pa.inter.net> wrote: > Do yourselve a big favor and install NiMH instead of > NiCads. They do not > have any of the problems Nicads have, are lighter, > have almost twice the > capacity, and can use the same trickle charger. I > replaced the Nicads that > were in my SAT2 with NiMH and they work great. I > bought a plastic battery > holder that holds 4 batteries, and installed that in > the tuner. > > Be careful about deep discharging Nicads. All the > batteries in the pack are > not identical in nature. If one battery goes > completely dead before the > others, and you keep discharging it, it will be > repolarized and damaged > permanently. > > NiMHs are your best bet. > > Richard > > -----Original Message----- > From: pianotech-bounces@ptg.org > [mailto:pianotech-bounces@ptg.org]On > Behalf Of Paul McCloud > Sent: Monday, January 19, 2004 11:40 AM > To: 'Pianotech' > Subject: RE: SAT batteries 9 volt? > > > Diane: > I have replaced my SAT I batteries with a 6 volt > battery pack > (NiCads) which is an exact replacement for the > battery pack that > Inventronics installed many years ago. Originally, > there was a sealed > lead-acid battery, and the nicads were installed by > them when the > original battery went bad. I don't know if they > changed the charging > circuit at that time, but I suspect that it was. > Lately, I removed the internal battery pack and now > use an > external battery pack which I velcro'd to the back > of the unit. I > change the individual batteries and charge them in a > separate charger. > This way, if one battery goes bad, I don't have to > replace the whole > battery pack. Maybe this is overkill, but I got > tired of replacing the > battery pack. > Nicad batteries need to be deep cycled. They > should be > discharged as far as possible, and this way they > will be conditioned to > hold a long charge. When we recharge the internal > batteries of the SAT, > they may not be discharged much, so they get used to > having a short use > before recharging. Then if we try to use the SAT > over a longer time, > the batteries discharge more quickly. I think you > know what I mean. > The low battery indication circuit on the SAT > doesn't necessarily give > the deepest cycle. It only tells us that the > battery voltage is > insufficient to power the unit. When I remove the > batteries to recharge > them in my charger, they will still run my AA > flashlight for a good > while. This is after the low battery indicator has > shown the need to > charge them, and after the unit has shut down. > The circuits in the SAT can run on 9 volts, or the > 6 volts that > the regular batteries supply. I've seen 9 volt > batteries installed on > the back of a SAT so that when your batteries are > dead, you just put the > 9 volt in there, and it will get you through the day > until you can > charge them again. Many electronic devices will run > on a range of > voltages. Using 9 volts will work, but it takes > more room, and more > batteries, to get there. And there's not a whole > lot of room inside the > SAT. > I hope this helps. > Paul McCloud > > -----Original Message----- > From: pianotech-bounces@ptg.org > [mailto:pianotech-bounces@ptg.org] On > Behalf Of DIANE HOFSTETTER > Sent: Sunday, January 18, 2004 9:45 PM > To: pianotech@ptg.org > Subject: SAT batteries 9 volt? > > Our apprentice, using my Dad's old SAT 1, tried to > replace the > batteries. > We searched the pianotech archives and he followed > the instructions > found, > but still he gets "LoBat" message after charging it > for four days. > > Now our question is, when he used 4 AA batteries, > that only gave him at > the > most 4.5 volts, but the charger we used with the SAT > was a 9 volt > charger. > > Are there some kind of industrial quality batteries > that give 2.5volts > in an > AA size? > > Thanks for the help! > > > > Diane Hofstetter > > _________________________________________________________________ > Find high-speed 'net deals - comparison-shop your > local providers here. > https://broadband.msn.com > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/
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