Battery And Charging - METREL MI 3122 Instruction Manual

MI 3122 Smartec Z Line-Loop / RCD

2.2 Battery and charging

The instrument uses six AA size alkaline or rechargeable Ni-Cd or Ni-MH battery cells.
Nominal operating time is declared for cells with nominal capacity of 2100 mAh.
Battery condition is always displayed in the lower right display part.
In case the battery is too weak the instrument indicates this as shown in figure 2.1. This
indication appears for a few seconds and then the instrument turns itself off.
The battery is charged whenever the power supply adapter is connected to the instrument.
Internal circuit controls charging assuring maximum battery lifetime. The power supply
socket polarity is shown in figure 2.2.
The instrument automatically recognizes the connected power supply adapter and begins
charging.
Symbols:
Indication of battery charging
Before opening battery compartment cover disconnect all measuring

accessories connected to the instrument and switch off the instrument.
Insert cells correctly, otherwise the instrument will not operate and the batteries

could be damaged.
Remove all battery cells from the battery compartment if the instrument is not used

for a long period of time.
Do not charge alkaline battery cells!

Take into account handling, maintenance and recycling requirements that are

defined by related regulations and manufacturers of alkaline or rechargeable
batteries!
Use only power supply adapter delivered from the manufacturer or distributor of the

test equipment to avoid possible fire or electric shock!
Figure 2.1: Discharged battery indication
-
Figure 2.2: Power supply socket polarity
+
Figure 2.3: Charging indication
8
Battery and charging