User Manual
WATT
METER
WATT
METER
PRECAUTIONS
1.
Do not
leave
a
cell connected
to the
Mega Meter
for
more than five
minutes.
2.
Be
aware that although
the
Mega Meter only takes small samples
from
the battery pack,
the
voltage will
be
reduced. Make sure
you
check
your pack balance.
3. Avoid plugging
the
cell
in
reverse polarity.
The
Mega Meter
can
cope with
a reversed connection
for a
few
seconds
but it's
still better
not
to do
it
in
the
first place.
WATT
METER
This function measures Current (Amps), Peak current, Voltage (Volts),
Power (Watts), Energy(Watt-Hours)
and
Charge(Amp-Hours) values
for
you,
in
real-time,
for
the
circuit
in
which
you
connect
it.
Speed
Motor
•1—
3
1
H
•
Controller
Mega Meter
is
activated when
the
battery
is
connected
to
the
unit.
• Press 'MODE'
to
select 'WATT METER' function
• Press 'ENTER'
to
confirm selection
Now
you can
stop wondering what's going
on
with your electric model
and
get
answers that allow
you
to
apply science
to
your hobby.
The
precise measurements
you
collect will help
you
fine tune your model
to
get
all the
performance that
you
paid
for.
With watt meter function,
it is
now
easy
to
determine things like:
• Flight time
• Current through
an
ESC and
motor
•
ESC, BEC and
motor efficiencies
• Charge
put
into
and
removed from
a
battery
and
the
performance
of
battery chargers
• Battery health
•
Why
power
is
lost during acrobatics
or
extreme conditions
• Effect
of
gearing
and
propeller size
and
shape
on
power consumption
and battery currents
• Effects
of
modifications,
age and
damage
on
many electrical system
components
• Clever hobbyists will discover
new
applications
to
further improve
electric model performance.
The following
are
some examples
of
meter connections. Many other
arrangements
and
uses
are
possible
Testing
Loads
(e.g.
motors)
WATT
METER
Battery
Pack
CURRENT:^.
3
5.11ft
PEAK
CC
'j.i.
52.
lift
U
DL.TftGE
:
25.13
U
N-ftTTflGE
:
882
.
3
1
M
P
E
fl
K(H
)
:
13
6
3.
2
M
Energy:
8 2 N h
Speed
Controller
Battery
Pack
CURRENT:^.
3
5.11ft
PEAK
CC
'j.i.
52.
lift
U
DL.TftGE
:
25.13
U
N-ftTTflGE
:
882
.
3
1
M
P
E
fl
K(H
)
:
13
6
3.
2
M
Energy:
8 2 N h
Speed
Controller
Battery
Pack
CURRENT:^.
3
5.11ft
PEAK
CC
'j.i.
52.
lift
U
DL.TftGE
:
25.13
U
N-ftTTflGE
:
882
.
3
1
M
P
E
fl
K(H
)
:
13
6
3.
2
M
Energy:
8 2 N h
Speed
Controller
CURRENT:^.
3
5.11ft
PEAK
CC
'j.i.
52.
lift
U
DL.TftGE
:
25.13
U
N-ftTTflGE
:
882
.
3
1
M
P
E
fl
K(H
)
:
13
6
3.
2
M
Energy:
8 2 N h
Motor
Battery
on
SOURCE side, Electronic Speed Controller
(ESC) and
motor
on
LOAD side, with
ESC on,
the
meter shows
the
current into
the
motor, voltage
and
power
at
the
battery
and
accumulates
the
charge
(Ah) while
the
motor
is
running.
Battery Charging
Battery
Charger
HATT
METER
CURRENT:
3 5
.
1 1 A
Battery
Battery
Charger
PEAK
CO:
52
.
1 ifl
UOLTfiSE:
2
5'.
i 3
U
Battery
Battery
Charger
WATTftGE:
S S 2
.SIM
P
%
ftK<H>:
13@3.
2 H
Energy
32 H h
Charge.
3
.
2 A h
Battery
WATTftGE:
S S 2
.SIM
P
%
ftK<H>:
13@3.
2 H
Energy
32 H h
Charge.
3
.
2 A h
With
a
battery charger
on the
SOURCE side
and
battery pack
on the
LOAD side,
the
meter shows
the
charging current into
the
battery,
the
voltage
and
charging power
at
the
battery
and
accumulates
the
charge
(Ah) into
the
battery.
Battery Discharging
Battery
Pack
CURRENT
PEKKCc
y•
UQL
TftGE:
H
ft
T T
ft
6
E
Discharge
Load
When
the
battery
is
discharged,
the
meter indicates
the
total charge
(Ah)
the
battery delivered
to
the
load
as
well
as
current, voltage
and
discharging power.