Re: First drag race battery test file available at Manzanita Micro website

["Joe Smalley" <joes@worldfront.com>]

Two additional files of a couple SVR batteries have been added to the
download section. These were both tested at 100F. They tested at 6.9 and 7.4
milliohms and the voltages were sinking during the test.

The Genesis battery did the same thing early in the test development. I
would imagine that we will need to cycle them several times at high amps
before they stop sagging during the test. This can be seen in the Watts
chart because the trace going up and coming down do not overlay each other
as the Genesis battery performed.

The test is not automated so the amps line rises and falls as fast as I
crank the knob. I want this to be automated to make the tests more
consistent. When it is automated, I can tell it to do several tests without
operator intervention and the results will be automatically recorded.

Joe Smalley
Rural Kitsap County WA
Fiesta 48 volts
NEDRA 48 volt street conversion record holder
joes@worldfront.com


----- Original Message -----
From: "Joe Smalley" <joes@worldfront.com>
To: <ev@listproc.sjsu.edu>
Sent: Tuesday, April 30, 2002 10:03 PM
Subject: First drag race battery test file available at Manzanita Micro
website


> I just posted my first drag race battery test data file at
> http://www.manzanitamicro.com/download.htm. The file is at the bottom of
the
> page under Old Genesis.
>
> The file is too large from my point of view so I need some suggestions on
> what to eliminate to make it smaller.
>
> To make a summary: The battery is a very old Genesis 38 AHR that only
makes
> 12 Ahr on a reserve capacity test and it was tested at room temperature.
The
> tester took it to 1088 amps and the voltage dropped to 7.84 volts. The
> internal resistance was 5.3 milliohms. The test lasted about 10 seconds
and
> I only got 8 seconds in the data file.
>
> I will be testing some other batteries as I get time and have space in the
> battery oven.
>
> Joe Smalley
> Rural Kitsap County WA
> Fiesta 48 volts
> NEDRA 48 volt street conversion record holder
> joes@worldfront.com
>