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12‐1015 rev‐B
User’s Manual Version 14.12
Please take Note:
This output value (565 CCA) is related to the actual power available in the
battery in relation to that battery's rating (630 CCA). On average, a new
battery's CCA as measured by this tester will read 10-15 % higher than its
stated rating.
As the battery ages, the CCA number measured by this tester will decrease
so it reads near its rating. While this value is not the same as a CCA test, it is
the best available measurement for showing a battery's current condition in
relation to its rating.
From the above example, a 630 CCA rated battery measuring 565 CCA
available power does not mean that the battery would pass a CCA test at 565
CCA. The available power reading shows that the battery is not able to
perform up to its rated ability (630 CCA).
In comparison to another battery when fully charged, the 630 CCA battery
measuring 565 CCA is no stronger than a 400 CCA battery showing 400 CCA
available power when fully charged.
The available power number is meant for comparison to its own rating. In
fact, in this example the 630 CCA battery is failing to perform to its rating,
while the 400 CCA battery is still working.
Basing on SAE, CCA test is a manufacturing process control test applicable
only on new, fully charged batteries. It does not produce an actual value, but
is a PASS / FAIL test.
It measures the discharge load, in amps, that a battery can supply for 30
seconds at 0°F/-18°C while maintaining a voltage of 1.2 volts per cell (7.2
volts per battery) or higher.
Thus, the CCA test shows the minimum power requirement for the battery as
rated, which means a battery rated at 400 CCA must measure 7.2 volts or
above for 30 seconds when a load of 400 amps is applied at 0°F/ -18°C.
The above methods also hold for DIN, IEC, JIS, EN basing on its individual
ratings.
5.
Int. R (Internal Resistance):
4.78 m
In normal condition, the internal resistance for car batteries, the internal
resistance will be from 2.0 m
to 15.0 m
. As a matter of fact, the higher the
battery CCA readings obtained the lower the internal resistance should be.
SOC
WET
GEL
AGM
100 %
12.60V or higher 12.85V or higher
12.80V or higher
90 %
12.58 V
12.77 V
12.72 V
80 %
12.44 V
12.69 V
12.64 V
75 %
12.40 V
12.65 V
12.60 V
50 %
12.20 V
12.35 V
12.30 V
