Tésting à Băttèry Without a Tester The internal resistance says a lot about the state of the battery. To calculate the actual internal resistance of the battery, MULTIMETER proceed as follows: 00 • Measure the source voltage (voltage when no current is flowing) (Vo) and terminal voltage (voltage when current is flowing) (Vc). CE CATI OFF • Calculate the voltage drop across the internal resistance V 200m 20M (V = Vo-Vc). CURRENT CLANMP 2. 2M Measure the load current (1). • Calculate the internal resistance (R = V/). OFF 20- -200K 1mV/A 200- 20K 10mV/A 600 2K A ZERO 10 200 The battery being tested has a CCA rating of 640 A. The battery manufacturer specifies that the maximum internal resistance should not exceed 2.5 cold cranking amps (CCA) rating of the battery. A 1 COM What is the maximum acceptable internal resistance value for this battery?
Tésting à Băttèry Without a Tester The internal resistance says a lot about the state of the battery. To calculate the actual internal resistance of the battery, MULTIMETER proceed as follows: 00 • Measure the source voltage (voltage when no current is flowing) (Vo) and terminal voltage (voltage when current is flowing) (Vc). CE CATI OFF • Calculate the voltage drop across the internal resistance V 200m 20M (V = Vo-Vc). CURRENT CLANMP 2. 2M Measure the load current (1). • Calculate the internal resistance (R = V/). OFF 20- -200K 1mV/A 200- 20K 10mV/A 600 2K A ZERO 10 200 The battery being tested has a CCA rating of 640 A. The battery manufacturer specifies that the maximum internal resistance should not exceed 2.5 cold cranking amps (CCA) rating of the battery. A 1 COM What is the maximum acceptable internal resistance value for this battery?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:Testing a Battery Without a Tester
The internal resistance says a lot about the state of the
battery.
To calculate the actual internal resistance of the battery,
MULTIMETER
proceed as follows:
• Measure the source voltage (voltage when no current is
flowing) (Vo) and terminal voltage (voltage when current
is flowing) (Vc).
CE CAT I
Calculate the voltage drop across the internal resistance
OFF
V 200m
20M
(V, - Vo- Vc).
CURRENT CLAMP
2.
2M
• Measure the load current (1).
Calculate the internal resistance (R = V/ I).
OFF
20-
-200K
1mV/A
200-
20K
10mV/A
600
2K
...
A
ZERO
10
200
10 COM
The battery being tested has a CCA rating of 640 A.
The battery manufacturer specifies that the maximum
internal resistance should not exceed 2.5 + cold cranking
amps (CCA) rating of the battery.
What is the maximum acceptable internal resistance value
for this battery?
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