(BESA-12V24G) User Manual
Version GS 17628
16
Version GS 17628
Please take Note:
This output value (120 CCA) is related to the actual power available in the battery in relation to
that battery's rating (180 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 180 CCA rated battery measuring 120 CCA available power does not
mean that the battery would pass a CCA test at 120 CCA.
The available power reading shows that the battery is not able to perform up to its rated ability
(180 CCA).
In comparison to another battery when fully charged, the 180 CCA battery measuring 120 CCA is
no stronger than a 100 CCA battery showing 100 CCA available power when fully charged.
The available power number is meant for comparison to its own rating. In fact, in this example the
180 CCA battery was failing to perform to its rating, while the 100 CCA battery is still working.
Basing on the Society of Automotive Engineers (SAE) in America, 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.
5. Internal Resistance: 18.91m
Ω
In normal condition, the internal resistance of the motorcycle battery should fall in the range of between
5.0
m
Ω
~ 45.0 m
Ω
is considered to be good. Anything above 45.0 m
Ω
resistance shows that its internal
plates has been aged or sulfated.
For car batteries, its internal resistance of
2.0 m
Ω
~ 15.0 m
Ω
is considered to be good due to high CCA
value they have.
As a matter of fact, the higher the battery CCA readings obtained the lower the internal resistance should
be.
6. LIFE: 75 %(Health)
This is an indication of the battery life expectancy [Health] in percentage.
Explanation of the following terms used as shown on the LCD display:
•
CCA (Cold Cranking Amps) – most commonly used Standard.
CCA is a rating used in the battery industry to rate a battery’s ability to start an engine in cold
temperatures. This rating is the number of amperes that a new fully charged battery can delivery at 0
°
F (-
18
°
C) for 30 seconds, while maintaining a voltage of at least 7.2 Volts for a 12V battery during cranking.
