From: Roger Johansson
Subject: Re: Reducing contact resistance for low volt use?
Date: Mon, 06 Jan 2003 15:25:06 +0100
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>If your discharge rates are of such a nature, you are
>stepping outside the specs for the battery's proper use.
You have obviously not read the earlier discussion in the same thread.
John is not trying to stay within specs, on the contrary, he is using
these batteries like no battery manufacturer ever imagined they would
Maybe you could find and read the earlier messages in the thread, I
think it would make you understand what this is all about.
These battle-robot builders regularly take out 30 A for 6 minutes from
3000mAh cells, and 50A for short durations, and they are trying to
push performance even further.
John is probably not counting on getting 100A out of a D cell, but he
wants to have measuring equipment to try it, to see the difference
between different cells.
When it comes to your statement that batteries in series does not
raise the current capacity it seems obvious that you are right, but
think about a fixed very low load resistance. If we can raise the
voltage it could actually push more current through that load.
If the batteies can take it.
That is why he talks about putting batteries in series to raise the
Please read the earlier massages in the thread, www.groups.google.com.