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de LEGO Group. ©2010 The LEGO Group.
Accumulated joules
When experimenting and measuring energy input, the
Energy Meter can store up to 100 joules. The following will
occur when this figure is reached:
• The Accumulated joules symbol blinks at one-second
intervals
• Input voltage continues to be measured and displayed
• Input current and Input wattage display 0
Energy Storage power level is low
After a period of usage, the lightning symbol on the display
will start blinking at one-second intervals to indicate that the
Energy Storage needs to be recharged. You can continue to
use the Energy meter until the lightning symbol stops blinking
and remains on constantly (see ‘Energy Storage power is
empty’ below). We recommend that you charge the Energy
Meter when you have completed your experiments.
After recharging once, you can continue using the Energy
Meter.
Energy Storage power is empty
The lightning symbol remains on constantly to indicate that
the Energy Storage is empty. You cannot continue using the
Energy Meter until it is fully charged.
Energy Storage charging
The Energy Meter has to be turned on. The input voltage
is then measured and shown in the display as the Energy
Meter charges.
100 J not fully charged
100 joules on the display does NOT indicate that the Energy
Meter is fully charged and that charging has stopped. The
Energy Meter will automatically turn off when fully charged.
Energy Storage discharging
The triangular warning symbol blinks at one-second intervals
to indicate that the Energy Storage is discharging.
INFO
Accumulated joules is
not an indication of the
charge status of the
Energy Storage.
TIP
Press and hold the On/Off
button for two seconds
to reset the accumulated
joules.
Using the Energy Meter
INFO
A full charge normally
takes approximately one
to three hours.
INFO
A full discharge normally
takes approximately
30-90 minutes.