C8000 Battery Testing System User Manual
168
high state of charge (i.e. fully charged) to provide accurate values. If
battery SoC is less than 50%, OhmTest readings are less consistent.
Low state of charge may produce poor or low values. It provides an
estimate of the battery capability to handle load. If using a battery
capacity rated under 300mah, use the IMPEDANCE program on
Channel 1.
Sequence
: The program tests the battery’s resistance and compares
the result with the battery’s O
HM
T
EST SETPOINT
. If the result is above
this threshold, the program fails the battery.
Duration
: 15 seconds for all chemistries.
Impedance
Function
: This program is similar to the IEC “AC” method of
resistance measurement. It is recommended that the battery have a
moderate to high state of charge to provide accurate values. Very low
or very high states of charge may produce poor values. It provides an
estimate of the battery capability to handle load. Note that the
“Impedance” program can only be run on Channel #1.
Sequence
: The program tests battery resistance and compares the
result with the battery’s O
HM
T
EST SETPOINT
. If the result is above this
threshold, the program fails the battery.
Duration
: 30 to 60 seconds for all chemistries.
Runtime
Function
: Often referred to as a “5-5-90” test, the RunTime program
simulates field application with three load currents and time
intervals.
Sequence:
The battery is charged. The program then repeatedly runs
the three different loads until the battery is fully discharged. The
Load algorithm for the loads are 1 minute at 100% then 1 minute at
50% and 18 minutes at 10% of the Discharge Current Specified in the
C-code, (i.e. The end-of-discharge setting in the C-Code is reached).
A full charge is then applied to complete the program.
Duration:
Approximately 8 – 10 hours for a NiCD battery using
default C-Codes.
GSM
Function
: Similar to the RunTime program, but uses a simulated
GSM discharge pulse to determine the battery’s “Talk Time”.
Sequence:
The battery is charged. The program then discharges the
battery using the GSM discharge pulse until it is fully discharged (i.e.
The end-of-discharge setting in the C-Code is reached). A full charge
is then applied to complete the program.
Duration:
Approximately 8 – 10 hours for a NiCD battery using
default C-Codes.
CDMA
Function
: Similar to the RunTime program, but uses a simulated
CDMA discharge pulse to determine the battery’s “Talk Time”.