Xref: utzoo comp.sys.laptops:2779 comp.sys.zenith:744 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!uwm.edu!linac!mp.cs.niu.edu!ux1.cso.uiuc.edu!news.iastate.edu!vaxf.iastate.edu!TNAA7 From: tnaa7@isuvax.iastate.edu (Steven M. Knapp) Newsgroups: comp.sys.laptops,comp.sys.zenith Subject: Re: Battery Watch Message-ID: <1991May8.233348.21582@news.iastate.edu> Date: 8 May 91 23:33:48 GMT References: <1991May06.115931.4461@cs.ruu.nl> <8T0J22w161w@nstar.rn.com> <1991May7.230727.10588@mercury.cair.du.edu>,<125399@unix.cis.pitt.edu> Sender: news@news.iastate.edu (USENET News System) Reply-To: tnaa7@isuvax.iastate.edu Organization: Iowa State University, Ames, IA. Lines: 17 >I had thought about buying it in order to *more* deeply discharge the >ni-cad pack than simply running it down, as there is still 5-6 volts left >after the computer ceases to run, so the pack is not fully discharged, only >to the point where there isn't enough juice left to power the computer. > >Thoughts on this? > Yes....make shure you are testing the voltage of the NiCd under load. Perhaps a 50 ohm resistor in parallel w/ the voltmeter would be about right. As far a discharging goes A 10 ohm resistor should immitate the laptop... (8/10=.8A) Also do not dischage the battery to zero...each cell should not drop below a certain level, which I am not shure of but I think it is in the .5 volt area. So for a 7.5 volt pack 3 volts would be a good minimum I think. sTEVE