From mrresp1@optonline.net Fri Aug 01 01:11:36 2008
Subject:Re: The Human Ear as a Measuring Device

no doubt about the depletion curves under constant load, but 90ma does sound a bit steep for your average "stomp box".?

either way, the good part here is if you're not running your 90ma stomp box for a *straight* 7 -> 43 hours (that would be a pretty long gig, no?) then your alkaline battery will actually "rejuvenate" itself during the non-usage periods & tend to recover voltage again. good research paper on that here: http://tinyurl.com/6xl3za if your duty-cycle isn't too heavy, then these batteries will go a pretty long time.

"industry standard "nominal" voltage for an alkaline cell is 1.4V"

normally for alkaline i typically see the nominal stated as 1.5V thus arriving at the (duracell stated) nominal 9V: from 6 * 1.5V = 9.0. same thing (single cell) as your ordinary AA, AAA, C, or D cell. 1.5v nominal..

i think mercury cells are rated at the 1.4V.

and then you also have:

a.. 1.2 volts per cell for NiCd and NiMH
a.. 1.6 volts carbon zinc
a.. 3.6 or 3.7 volts per cell for Lithium Ion or Lithium Polymer
a.. 3 volts per cell for lithium primary
a.. 2 volts per cell for sealed lead acid

a google search will turn up most of this stuff:

http://en.wikipedia.org/wiki/Alkaline_battery


regards,

m


----- Original Message -----
From: "Bruce Wahler"