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Black and Decker VPX 7V Tool battery tests

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nuckolls.bob(at)cox.net
Guest

Posted: Sun Nov 25, 2007 6:17 am Post subject: Black and Decker VPX 7V Tool battery tests

The results of a dynamic load test of the VPX 7V

tool battery may be viewed at:



http://www.aeroelectric.com/Pictures/Battery/Black_and_Decker/VPX_7V_Z-Test.jpg



The results of this test suggest that two

such batteries in series (total weight of

about 260 gm) would offer a 14v, 1.0 a.h.

battery (1 hour rate) with an internal

impedance on the order of 0.12 ohms.



The curve shows that a VPX 2-battery array

loaded to about 7.5 amps will easily

maintain a terminal voltage right at 12V

for a period of a minute. This suggests

brown-out protection for systems drawing

7.5A or less would be nicely supported by

a couple of these batteries. More testing

to come.



Bob . . .

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