Megger DET2/2 Guide De L'utilisateur page 16

Battery Charging
Battery Charging Power cord plug
If the power cord plug is not suitable for your type of
socket, do not use an adaptor. You should use a
suitable alternative power cord, or if necessary, change
the plug by cutting the disconnected cord and fitting a
suitable plug.
The colour code of the cord is:-
Earth (Ground)
Neutral
Phase(Line)
If using a fused plug, a 3 amp fuse to BS 1362 should
be fitted.
Note: A plug severed from the power cord should be
destroyed, as a plug with bare connections is
hazardous in a live socket outlet.
16
- Yellow/Green
- Blue
- Brown
Battery Charging Notes
1) Do Not leave battery in a totally discharged state.
If the instrument is idle for long periods, recharge
the battery at least every 6 months. (More
frequently if the storage temperature is >40 °C).
2) Battery charging should be carried out in a dry
environment and at temperatures in the range 0 °C
to 40°C.
3) When charging the battery indoors, the area
should be well ventilated.