gpelectric.com | [page 15]
05. Peukert Exponent
When unknown, it is recommended to keep this value at 1.25 for lead acid batteries and 1.05 Li-ion batteries. A value
of 1.00 disables the Peukert compensation.
Default Range Step Size
1.25 1-1.5 0.01
06. Charge Eciency Factor
The Charge Eciency Factor compensates for the Ah losses during charging. 100% means no loss.
Default Range Step Size
95% 50-100% 1%
07. Current Threshold
When the measured current falls below this value, it will be considered zero. The current threshold is used to cancel
out very small currents that can negatively aect the long term state of charge readout in noisy environments.
For example, if the actual long term current is 0.0A and, due to injected noise or small osets, the battery monitor
measures 0.05A, and in the long term the BP-BMK-50 can incorrectly indicate that the battery needs recharging.
When the current threshold in this example is set to 0.1A, the GP-BMK-50 calculates with 0.0A so that errors are
eliminated. A value of 0.0A disables this function.
Default Range Step size
0.1A 0-2A 0.01A
08. Time to Go Averaging Period
Species the time window (in minutes) that the moving averaging lter works. A value of 0 disables the lter and gives
an instantaneous (real-time) readout, however, the displayed value may uctuate heavily. Selecting the longest time
(12 minutes) ensures that only long-term load uctuations are included in the time to go calculations.
Default Range Step Size
3 minutes 0-12 minutes 1 minute
09. Zero Current Calibration
If the GP-BMK-50 reads a non-zero current even when there is no load and the battery is not being charged, this
option can be used to calibrate the zero reading. Ensure that there really is no current owing into or out of the
battery (disconnect the cable between the load and the shunt), then press SELECT.
10. Synchronize
This option can be used to manually synchronize the GP-BMK-50. Press SELECT to synchronize. The GP-BMK-50
can also be synchronized when in normal operating mode by holding the + and - buttons simultaneously for 3 seconds.
FULL SET-UP DETAILS
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