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Batteries question

I

Ioannis Vranos

Jan 1, 1970
0
Hi fellows, one somehow unusual question.


I was using some AAA 1.5V batteries for usual stuff (remote controls
etc) and recently decided to move to rechargeable batteries.

So I purchased 4x AAA Sanyo HR-4U batteries which turned to be of 1.2V.
I have not much micro-electronic background so I wonder, does this make
any difference?

Are there any 1.5V rechargeable AAAs or is this the usual for such
rechargeables?
 
P

petrus bitbyter

Jan 1, 1970
0
Ioannis Vranos said:
Hi fellows, one somehow unusual question.


I was using some AAA 1.5V batteries for usual stuff (remote controls etc)
and recently decided to move to rechargeable batteries.

So I purchased 4x AAA Sanyo HR-4U batteries which turned to be of 1.2V. I
have not much micro-electronic background so I wonder, does this make any
difference?

Are there any 1.5V rechargeable AAAs or is this the usual for such
rechargeables?

Rechargaeble batteries are usualy NiMHs these days. These and the older
NiCads are 1.2V. But they keep that voltage pretty long. The voltage of
normal batteries falls almost constantly during their usefull lifetime. So
that normal batteries are around 1.2V for a significant part of their
lifetime. Nevertheless, some manufacturers warn *not* to use rechargables in
their equipment. Keep also in mind that primary batteries last longer then
rechargeables on one charge. Especially in very low power applications -
clocks for instance - the self discharge of rechargeables is often more then
the load.

petrus bitbyter
 
J

Julie

Jan 1, 1970
0
Ioannis said:
Hi fellows, one somehow unusual question.

I was using some AAA 1.5V batteries for usual stuff (remote controls
etc) and recently decided to move to rechargeable batteries.

So I purchased 4x AAA Sanyo HR-4U batteries which turned to be of 1.2V.
I have not much micro-electronic background so I wonder, does this make
any difference?

Are there any 1.5V rechargeable AAAs or is this the usual for such
rechargeables?

This is normal.

Note that rechargeable cells self-deplete over time, figure 10-20% per month or
so. This means that they are *not* a good choice for low-drain/occasional use
items like remote controls, unless you plan on recharging monthly.
 
K

KellyClarksonTV

Jan 1, 1970
0
I think even for low-drain applications rechargeables still save money ... AC
power is way too cheap.
 
J

Julie

Jan 1, 1970
0
KellyClarksonTV said:
I think even for low-drain applications rechargeables still save money ... AC
power is way too cheap.

Most definitely they save money -- no question there -- but, do they save
time/effort? In low-drain situations, no -- so it comes down to a cost/benefit
analysis.
 
I

Ioannis Vranos

Jan 1, 1970
0
Julie said:
This is normal.

Note that rechargeable cells self-deplete over time, figure 10-20% per month or
so. This means that they are *not* a good choice for low-drain/occasional use
items like remote controls, unless you plan on recharging monthly.


Actually my main purpose was my MP3 player/Radio which was "burning" 1
AAA in about 12 hours of operation. :)


Also a nice FAQ provided in another newsgroup for the same matter:

http://www.greenbatteries.com/documents/Battery_FAQ.htm


And one that I found myself:

http://www.batterylogic.co.uk/faq.htm
 
R

Robert Baer

Jan 1, 1970
0
Julie said:
This is normal.

Note that rechargeable cells self-deplete over time, figure 10-20% per month or
so. This means that they are *not* a good choice for low-drain/occasional use
items like remote controls, unless you plan on recharging monthly.

OTH, the Rayovac Renewal / Rechargeable Alkalines are super for low
drain / occasional use.
In that mode, their lifetime is in the years.
 
K

KellyClarksonTV

Jan 1, 1970
0
I think they even save money on lowdrain devices since AC power is so cheap.
 
A

Aplin17

Jan 1, 1970
0
I think non-rechargeable alkaline batteries can be recharged a few times if
used in very low drain devices
 
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