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8.3.4. LIfE bEtwEEN CHArGES
The mean battery life depends on the type of measurement and on how the device is used.
Test voltage (V)
500
1000
2500
5000
10000
15000
Number of 5s measurements with 25s pauses
between measurements
900
1000
1200
1000
600
350
In U-RAMP or U-STEP mode and when measuring PI, the mean battery life depends essentially on the measurement duration.
For a duration of 10 minutes, it is approximately 50 to 100 measurements.
When measuring DAR, with a duration of one minute, the mean battery life is approximately 200 to 600 measurements.
How long your device can operate when the battery is fully charged depends on several factors:
The consumption of the device, which depends on the measurements you make,
The capacity of the battery. It is greatest when the battery is new, and declines as the battery ages.
Here are a few ways to extend battery life between charges,:
Use the back-lighting only when it is strictly necessary,
Set the brightness of the back-lighting to the lowest level at which you can still read the display unit,
Program the shortest time to automatic switching off you are comfortable with (see SET-UP, § 5.2),
During insulation measurements made in MANUAL mode, with high test voltages, stop the measurement by pressing the
START/STOP button when the measurement is over.
Lors des mesures d’isolement réalisées en mode MANUEL, pour les tensions d’essais élevées, arrêtez la mesure en appuyant
sur le bouton STAR/STOP lorsque la mesure est terminée.
8.3.5. “dEfECt” MESSAGE
When a battery is deeply discharged or its storage temperature is low, the charger may execute a prior battery reactivation cycle.
That means that the charger applies a slow charge until the battery reaches either a minimum temperature threshold or a minimum
charge threshold.
If the battery is in good condition, this reactivation stage ends after about 45 mn and the charger switches over to fast charging.
However, if the maximum time allowed for the reactivation stage is exceeded, the instrument declares the battery defective in the
form of a message (Defect) on the screen of the measuring instrument.
In this case, we recommend proceeding as follows:
Remove the battery compartment cover (see §9.1.2),
Disconnect the battery connector,
Wait approximately 10 seconds,
Reconnect the battery connector to the device,
Put the battery compartment cover back in place,
Charge the battery once more.
If charging proceeds normally, let the device perform a full charge.
If, at the end of a certain time, the “Defect” message appears again, both batteries must be replaced (see §9.1.2).
8.3.6. ENd of bAttEry LIfE
The internal resistance of a battery at the end of its life is high. The result is an abnormally short charging time.
After a full charge, the instrument indicates “Full”, but as soon as the charger is disconnected, the display unit loses its contrast
and goes off, meaning that the battery no longer holds the charge.
Before replacing the battery, we recommend referring to §8.3.5 and performing the procedure indicated there.
