Natural Science Forum / Chemistry / Electrochemistry / April 2005

what kind of rechargeable AA batteries should i buy for maximum playing time
on my flash player.
can anyone please give some links to the charger and batteries that i need
to purchase.

what is the practical difference between energizers 15 minute charger and
the
compact one one this link.
http://www.energizer.com/products/rechargeables/sizes.aspx

Guys,
I just got a new GPS and the thing has a Li Ion battery that charges as
soon as the GPS is connected to external power.
A nice feature ... but isnt it that Li Ion batteries have only 1000

I need to run both my laptop and videocamera for 6-8 hrs continuously.
Went out shopping for deep cycle batteries and the one I was going to get
was a 12v 115ah marine battery, the highest rated one in the store. But I
didn't buy it because I wasn't sure if it was too much or too ...

Sorry, if this isn't the right Board for these questions..
Any recommendations on an NiMH/LiON analayzer / reconditioner for cel
and laptop batteries? My Goggle for product reviews (user
comment=review also) provided the alleged defects of the model I was

I am building a  remote radio control for a camera
The requirement is for  5 Volts at 13 M/a  and to keep the weight to a
minimum
4 button cells would seem to be suitable

I have an OLD laptop that when the battery is inserted the power LED start
blinking RED indicating an error.  It is a Toshiba Satellite Pro 420CDS,
with the LED blinking red, will the battery charge?  This is a LiOn battery
and it has not been used for years.

I have a Thinkpad I've just got for a friend from ebay.
After a full recharge the battery meter reports 58 minutes of battery life,
which it then counts down and duly shuts off the laptop at 3% as per power
settings. However, if I turn off all the power sense and just let the ...

I am looking for a replacement battery for a Tektronix "Power Scout"
222PS portable scope.  The original battery supplied by Tek consists
of two Panasonic 4 V 2.2 Ah/20h gel cell batteries glued together and
wired in series.  The Tek label rates this combination at 8.0 V,

I have some Sanyo AA NiMh (HR-3U Twicell 1500) that I am quite pleased
with (got them when I bought an HP CapShare hand scanner).
I can't seem to locate anyone selling Sanyo AA NiMh and wonder under
what other brand names Sanyo cells are sold (I get the impression from

What do you think about europositron battery (see link bellow)? 80KW.h into
50 l and with 60kg! I have asked them about time to be charged, and they
told me 1 to 3 hours. With such parameters, the electric car will be very
competitive.

My RV is parked permanently in a campground, it is old and has no charger or
converter.  I want to use the 12 volt system in an emergency and I figure to
use 6 volt lantern batteries with screw terminals in a series-parallel
arrangement.  I will have two sets of two batteries ...

Would anyone like to comment on the recent Chapter 11 announcement
by Eagle-Picher?

Guys,
my cordless phone's NiCd are about as dead as can be from the memory
effect... Now I found a NiMh battery pack for very cheap... same
voltage ..

Toshiba announced a very interesting new Li-Ion battery today, but there is
not much "real numbers" specs available.
http://www.toshiba.co.jp/about/press/2005_03/pr2901.htm
For instance: they claim 80% recharge in 1 minute - this means a 50C charge