Author: Aaron Gordon
Date: 06:32:13 04/07/04
Go up one level in this thread
On April 07, 2004 at 00:33:35, J. C. Boco wrote: >You have all been waiting for the exciting data regarding battery type and >length of operation of the Novag Star Diamond. > >I have tried several types of alkaline batteries so far. Panasonic, Maxell, >Duracell, Energizer. For the Maxells, I simply played chess and during one of >my games I noted that the battery light came on (Game #14 I think, at near 24 >hours). > >For the remaining three I did a fast discharge by setting a long time control >and letting the computer play itself. Then when I got to 20 hours I gave the >batteries an overnight rest and then started its thinking again, checking every >15 minutes or so to determine if the battery light had gone on yet. If 2 hours >were spent (total 22 hours) and no battery light, I gave the batteries another >overnight rest before the next 2 hour session. All these batteries are pretty >much the same, 23 to 25 hours of power. > >I am now draining the Duracell Ultras (a $3.57 experiment in case someone wants >to help support my research!!!!), and soon the red-hot scientific field of >Batteries and Chess Computers will be advanced somewhat. What size batteries are you using? AA? If so, get yourself a NIMH charger and some 2300mAH batteries. If you use AAA batteries get the same charger but some 750mAH or better batteries. These will put any commercial 'regular' battery to shame. Before when playing chess on my Palm VII with normal batteries, I don't remember any specific numbers but after a 6 or so hours w/ AAA batteries I would get auto-shutoffs (or maybe even less time than that). After switching to 750mAH AAA batteries it significantly increased the runtime. I could go a few days now analyzing a position. I still wasn't satisfied (of course). :) So, I built an 'add on' pack to hold two 2300mAH AA NIMH batteries. So the Palm VII is now powered with two 2300mAH and two 750mAH batteries. I can 'forget' to turn off analysis, leave it go all night and come back in the morning and the battery icon is still above 95%. With general use it will last over a MONTH. The battery pack doesn't get in the way either, just big enough to hold two AA batteries and is velcro'ed on the back. You can take a look at the batteries & chargers at www.thomasdistributing.com Here are the AA batteries I use: http://www.thomasdistributing.com/lm-pro415-23.htm These AA batteries might be a little better as they're 2400mAH. http://www.thomasdistributing.com/cta-4aa2400.htm This place doesn't have the AAA batteries I have but these are excellent (and 800mAH): http://www.thomasdistributing.com/gp70aaahc-u4.htm The charger I have is this one: http://www.thomasdistributing.com/maha-mh-c204f.htm With this combination you will not go wrong. I'm glad I have a nice NIMH setup now, batteries at the store cost way too much now days! If you do any testing with these definitely post the results here.
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