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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 71,287 of 72,318   
   AK to All   
   Re: Charging NiMh batteries when not com   
   21 Jun 19 12:47:57   
   
   From: scientist77017@gmail.com   
      
   On Tuesday, June 18, 2019 at 2:19:29 AM UTC-5, whit3rd wrote:   
   > On Thursday, June 13, 2019 at 4:26:13 PM UTC-7, AK wrote:   
   > > The aaa alkaline batteries went out on my tv remote.   
   > >   
   > > I decided to use my NiMh UBL aaa batteries. 1100 mAh.   
   > >   
   > > They are currently showing 1.31 volts.   
   > >   
   > > And they work ok in the remote as is.   
   >   
   > Not a surprise; alkaline cells when fresh are 1.5V, but are useful down to   
   about 1V.   
   > NiCd and NiMH are 1.2 to 1.4V fresh-charged, useful down to about 1V.   
   > Li nonrechargeables are 3.6V fresh, useful down to 3.0V (so can replace   
   > a 4.5V alkaline clock battery, or two in series can replace a 9V which has 6   
   alkaline cells)   
   >   
   >   
   > > My charger is the manual type.   
   > >   
   > > It charges that type at 150 mA.   
   > >   
   > > I want them fully charged since they are 1.2 volts versus 1.50 for the   
   alkaline.   
   >   
   > Don't use rechargeables for best shelf life, but for best total life.   
   >   
   > Mainly, your remote control is inert (it gets used in subsecond bursts when   
   you press   
   > a button).   The self-discharge when not in use (and higher purchase price)   
   make   
   > rechargeables a questionable fit for that application.   
      
   I already had them, so decided to go ahead and use em.   
      
   Andy   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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