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Battery Charger Analyser : Operator Manual
19.3 Accuracy
Final accuracy is dependant on the accuracy of the calibration. At the point of calibration i.e ~24V
then the accuracy figures are worst case for voltages that deviate away from this point. I.e. at 40V
displayed voltage could be worst case 0.5% in error. This also applies to the current calibration.
19.3.1 Voltage
Displayed Voltage vs Measured Voltage is better than 0.5%
19.3.2 Current
Displayed Current vs Measured Current is better than 1%
19.3.3 Time
The internal RTC is crystal controlled and the manufacturers quoted figures for the
accuracy of this produce a time error of one to five seconds in a one year period
19.3.4 Temperature
No accuracy figures are quoted for the displayed temperature readings as these are
for guidance only and could be 10% of the actual displayed figures.
20 Internal Battery
The internal parameters of the Battery Charger Analyser are maintained by a single coin
cell mounted on the display PCB at the front of the unit. This should be changed every
5-6 years. If it should fail during use this will be indicated by the unit not keeping the
correct time, and custom library data being “lost”.
The cell is a standard Lithium button cell number CR2032. When
replacing the battery please observe the correct methods of disposal
of the old battery in accordance with your local regulations.
Doc: DWG1030-25-R11 Operators manual.odt
Page 71 of 72
Copyright Material of Intelligent Charging Limited © 2015
Printed On : 12/06/17
