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Battery Charger Analyser : Operator Manual
5
Battery Discharge Operation
The modes of operation are the same for both lead acid and alkaline batteries, so discharge
parameters entered are the same for both types. Therefore the references in this section will be
made to refer to either type.
5.1
Parameters Required
The requires three basic parameters to be entered for this function.
a) Test Trip Voltage.
The test trip voltage is important and must be entered on custom library data
because the uses this to define the point at which the battery has reached
it's set discharged point
b) Test discharge current.
During the period of discharge the will regulate the current drawn from the
battery at this level, regardless of terminal voltage.
c) Test time.
The maximum time that the test must perform, before being terminated.
5.2
Test Operation
The test is performed by discharging the battery by the current set in (b), for a maximum
time set in (c).
If a battery achieves this target it is considered to be 100% or more efficient.
If the battery terminal voltage falls to (a), then the will terminate the process
and report the capacity as a percentage of elapsed time.
It is important that when entering custom library entries that the manufacturers
recommendations are referred to for capacity test parameters.
As a general guide it is usual to have typically the ampere/hour rating of the battery as the
discharge current and the time set to one hour. The termination voltage us set to typically
20V for a 24V battery.
Example:
For a 24V 44A/H battery the following parameters would set.
Trip Voltage
20
Volt
Discharge Current
44
Ampere
Time
1
Hour
If the battery under test fails with by falling to the trip voltage after 55 minutes then it's
Doc: DWG1030-25-R11 Operators manual.odt
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Copyright Material of Intelligent Charging Limited © 2015
Printed On : 12/06/17
