Author: Mark Young
Date: 15:24:03 04/05/04
Go up one level in this thread
On April 05, 2004 at 14:23:01, Robert Hyatt wrote: >On April 05, 2004 at 07:57:05, Mark Young wrote: > >>On April 04, 2004 at 12:06:22, J. C. Boco wrote: >> >>>Hello all and good day to you. >>> >>>I have the Star Diamond. I used some typical fresh alkaline batteries in it and >>>my Star Diamond ran for (I think it was) about 24 hours before I had to change >>>the 4 AA batteries. >>> >>>When the next set runs out, I'm going to put those newer batteries in, those >>>Duracell Ultra ones. They claim to last longer, and of course they cost more. >>>I'm interested in whether these Ultra batteries will last 40+ hours or not. >>> >>>Anyway, I noticed that Energizer has AA batteries that are Lithium batteries, >>>made for digital cameras and regular cameras. These cost a lot, $10 for 4 of >>>them. Since they are AA and rated at 1.5V (just like all the other AA >>>batteries) I thought that it would be interesting to plug these Li batteries >>>into the Star Diamond. Maybe it'll run for over 100 hours that way. However, >>>one thing holds me back..... >>> >>>On the package it lists the mAHrs (milli amp hours). This figure was 2000 or >>>2250, I don't recall (but it must be a good battery if it has an Expert or >>>Master ranking. Ha ha ha!). But the other "regular" alkaline batteries (both >>>the regular and the ultra) had a number which was 250 mAHrs *less* than the >>>Lithium-type batteries. >>> >>>So voltage is the same but mAHrs is larger for the Li batteries. >>> >>>Is it safe to use these Li batteries in the Star Diamond? Or anything else? >>>((Besides cameras of course, which it is advertised for)). >> >>Yes lithium batteries are safe to use, but it is more cost effective to by >>rechargeable NIMH. You pay more up front for the charger and batteries, but you >>always have batteries better then standard alkaline. >> >>Mine are over a year old and are rated at 1700mAh. There are better rechargeable >>batteries now that rival even lithium batteries. > >You have to be careful. Alkaline batteries produce 1.5 volts. Rechargable >batteries are typically 1.2 volts. A radio might not care whether it is a 4.8 >volt or 6 volt (assuming 4 batts in series) but a computer might... No this is not correct. Maybe the old ni-cad batteries. Anyway this should not be a problem. Alkaline batteries only start out at 1.5 volts new, but with a little use they drop voltage. Most rechargable batteries has a much flatter voltage curve. Rechargeable batteries hold around 1.5 v for most of their use time with a quick drop in voltage at the end before needing to be recharged.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.