6
A FURThER LOOk...
vOLTAgE ChART
Estimated
Minimum Required
Electrolyte
Voltage
Temperature
Under 15 Sec. Load
12V
6V
70°F Above
9.6
4.8
60°F
9.5
4.75
50°F
9.4
4.7
40°F
9.3
4.65
30°F
9.1
4.55
20°F
8.9
4.45
10°F
8.7
4.35
0°F
8.5
4.25
MULTIPLE BATTERY
SYSTEM TESTS
For multiple batteries, the battery to be tested must be
disconnected from all others.
BATTERY LOAD TEST
C
1. Hook-up for battery load test. (Individually) Be sure
load is off before connecting. Do not connect tester to
more than a 12 volt battery. To avoid sparks, connect
negative lead to battery first and then connect positive
lead. Multiple batteries must be disconnected and
tested individually.
2. Set volts switch to internal setting.
3. Apply a load equal to 1/2 cold crank rating to battery
(or 3x amp hour rating).
Example: Cold crank rating 500 CCA
÷ 2 = 250 amp
load. Amp hour rating: 90 amp hours x 3
= 270 amp
load. Apply recommended load by turning load knob
slowly clockwise. Push button for 15 second timer,
indicator light will off. The recommended load must be
maintained for the duration of the 15 seconds in order
to accurately test the battery. The amperage will tend
to drop as a normal reaction to the gradual decrease
in voltage so the load must gradually be increased by
turning the load knob clockwise. Indicator light will turn
off after 15 seconds. Observe voltage reading.
4. Estimate the temperature of the electrolyte fluid when
reading the pass/fail scale. The amount of voltage a
battery can maintain when a load is applied decreases
as the temperature decreases. Use the voltage chart
at right to determine the correct minimum voltage. If
voltage level was below specifications, battery should
be replaced (or charged and retested). If voltage level
was above specifications, battery is O.K.
5. Verify that the load is off before disconnecting tester.
A Battery must be able to turn over (crank) an
engine while maintaining enough current to activate
the ignition system. Batteries should be able to
maintain 9.6 volts with an elecrolytic temperature of
70° when a recommended load is applied.
1. HOOk-up FOR
BATTERY LOAD TEST
2. ZERO
AMMETER
(IF nECESSARY)
3. LOAD BATTERY
4. READ
VOLTS
5. TuRn OFF
LOAD
LEAVE THE COOLING FAN ON
FOR 15 SECONDS, WITH LORD
OFF TO REDUCE OVER HEATING.
WARnInG
BE SURE TO TURN FAN
& CIRCUIT OFF BEFORE
DISCONNECTING TESTER.
WARNING
BE SURE LOAD IS OFF BEFORE
DISCONNECTING TESTER.
·
arrow
on
probe
BLACK
RED
battery
OFF
LOAD
OFF
LOAD
A
M
P
S
V
O
L
T
S
3. TIMER
PRESS BUTTON
TO START 15
SECOND TIMER
START
*
To test a 6 volt battery with a CCA above 800 amps. Apply a load equal to 1/4 the CCA rating or 1.5 times the amp hour rating.
Maintain the load to 30 seconds by pressing the timer button a second time immediately after the green LED turns off.
*