2012 YAMAHA EC-03 battery

CHARGING THE BATTERY
6-6
1
2
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7
8
9indicator level appears in the dis-
play and the beeper sounds. All in-
dicator segments appear for a few
seconds, and the charging
progress status is shown.
TIP
The battery may be above the
maximum 50 
C suitable for charg-
ing immediately after riding. In this
case, the charger enters a waiting
mode and “HEAT” flashes until the
battery and battery charger reach
the specified temperature. Charg-
ing then starts automatically.

If ambient temperature is below –5
 C, “COOL” flashes and the vehi-
cle enters a waiting mode until the
battery and battery charger reach
the specified temperature. Charg-
ing then starts automatically.

If the battery is already fully
charged when the charging plug is
plugged in, the display will show
the fully charged status for a few
minutes and then go off. The bat-
tery charger will not charge thebattery further.
10. The battery charging status can be checked in the display. (See page
6-9 for more information about the
charging status display.)
11. Charging can be stopped or re- started by unplugging or plugging
in the charging plug.
TIP
Only the battery level indicator ap-
1. Temperature indicator “HEAT”
1
1. Temperature indicator “COOL”
1
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CHARGING THE BATTERY
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567
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9
pears in the display during charg-
ing. The display goes off if the
charging plug is unplugged during
charging.

Even if the key is turned to “ON”,
the vehicle does not enter thestandby mode during charging.
Completing charging
When the battery is fully charged, the
display goes off automatically after a
few minutes. 1. Grasp the charging plug, and then unplug it from the electrical outlet.
NOTICE: Do not pull the charg-
ing cord to unplug the charging
plug from the electrical outlet.
This could damage the charging
cord.
[ECA17470]
2. Open the seat. (See page 4-12 for
more information.)
3. Hold the charging plug, and while pressing the charging cord into the
groove, wind it clockwise as
shown. NOTICE: If the charging
cord is not wound properly, the
vehicle, charging cord or charg- ing plug can be damaged when
closing the seat.
[ECA17480]

4. Secure the charging cord by plac- ing it in the holder as shown.
1. Charging plug
1
1. Charging plug
2. Groove
3. Charging cord
1. Holder
1 2
3
1
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CHARGING THE BATTERY
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8
95. Close the seat, and push down on
the back to lock it in position.
TIP
Before closing the seat, make sure
that nothing is left under the seat.

Make sure that the seat is securelylocked before riding.
6. Remove the key.WARNING
EWA15900
When not in use, do not leave the
charging plug plugged into an out-
let. Dust or foreign objects could
build up and cause a fire. Be sure to
unplug the charging plug from theoutlet after use.
EAU50402
Charging time Normal charging
Charging time varies depending on the
riding conditions before charging, re-
maining battery level, and ambient tem-
perature. It takes approximately seven
hours to charge the battery from a 0%
charged level in the optimum ambient
temperature range of 15 C – 25 C.TIPWhen the charging process is complet-
ed, the power from the built-in batterycharger is cut off automatically.
Waiting mode for charging
The vehicle enters a waiting mode if the temperature is not suitable for charging
as follows:

The battery may be above the
maximum 50
C immediately after
riding. In this case, the charger en-
ters a waiting mode and “HEAT”
flashes until the battery and bat-
tery charger reach the specified
temperature.

If ambient temperature is below –5
 C, “COOL” flashes until the bat-
tery and battery charger reach the
specified temperature.
When the temperature is suitable for
charging, charging starts automatically.
100
50
0 2.0 4.0 7.0
Charging time (hours)
Battery
level (%)
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CHARGING THE BATTERY
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567
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EAU50411
Display of charging progress
status The charging process is displayed by
the battery level indicator.
EAU50425
About the battery Lithium-ion (Li-ion) battery
The Li-ion battery used in the EC-03
features high energy density and has a
high voltage (approximately three times
that of nickel-cadmium (Ni-Cd) or nick-
el-hydrogen (Ni-MH) batteries), mean-
ing it can be made both compact and
lightweight.
Nickel-cadmium and nickel-hydrogen
batteries have a memory effect that
causes electric output capacity to de-
crease as a result of repeated partial
discharging and charging, so that they
need to have to be completely dis-
charged periodically. Li-ion batteries
can be repeatedly partially charged
without requiring fully discharging.TIP
It is not necessary to use up the
battery before charging.

The electric output capacity de-
creases over time and use, but the
rate at which it depletes depends
on condition of use.

The battery discharge may vary
depending on the ambient temper-ature. At low temperatures, the
traveling distance on a single
charge is reduced compared with
normal temperatures and charging
also takes longer. At low tempera-
tures, the electric output capacity
decreases, compared with normal
temperatures, and traveling dis-
tance on a single charge is re-
duced, but this is normal.

Storing the vehicle in an extremely
hot or cold place could decrease
the electric output capacity.

Even if the battery is not used, thebattery discharges gradually.
Recycling the battery
Li-ion batteries can be recycled. If the
electric output capacity decreases ex-
cessively due to depletion, have a
Yamaha dealer replace the battery. Al-
ways follow local regulations regarding
the disposal of batteries.
0 2020 40
40 60
60 80
80 99
100
Charging progress
status in the display
Charging progress
status (%)
Not displayed
Lit Flashing
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CHARGING THE BATTERY
6-10
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8
9Battery depletion
The electric output capacity of the
Li-ion battery used in the EC-03 gradu-
ally decreases in the course of use. Al-
though the extent of depletion varies
based on the conditions of use, electric
output capacity typically decreases to
70% of a new battery when having trav-
eled 8000–10000 km for two years.
This is equivalent to charging about
500 times with the condition of riding
16–20 km on a single charge.
Battery electric output auto-stop-
ping function
The battery is equipped with a function
to prevent further use in case of exces-
sive depletion. When eight years have
passed since initial battery charging or the accumulated charging amount has
reached 14000 Ah, the battery will no
longer be usable.
TIP
When the battery is replaced with
a new one, fully charge the battery
once before using it. If the battery
is not fully charged, the battery lev-
el indicator does not show the pre-
cise battery level.

At low temperatures such as 0
C,
the electric output capacity de-
creases by approximately 20%
compared with normal tempera-
ture.

If a depleted battery is used at low
temperatures, the electric output
capacity decreases by approxi-
mately 20% compared with normaltemperatures.
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OPERATION AND IMPORTANT RIDING POINTS
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9
TIPWhen the vehicle enters the riding
mode, the beeper sounds. The beeper
stops sounding when either brake lever
is squeezed or the vehicle starts mov-ing.
If the entered security number is
incorrect, the buzzer sounds, “NG”
flashes for a few seconds, and the
vehicle returns to the standby
mode.
If this occurs, repeat the procedure
from the step 6.TIPIf an incorrect security number is en-
tered three times in succession, the se- curity lock cannot be unlocked even if
the correct security number is entered.
Repeat the procedure after first turning
the key to “OFF” and then back to “ON”
again.
8. Check the battery level indicator to make sure that the remaining
charged level is sufficient. (See
page 3-3 for more information
about the charge level.)
EAU53940
Starting off 1. Check that the operating status in-dicator “RUN” is displayed, and
that the vehicle is in the riding
mode.
2. Switch the turn signal on.
1. Incorrect number indicator “NG”
1
1. Battery level indicator
1
1. Operating status indicator “RUN”
1
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OPERATION AND IMPORTANT RIDING POINTS
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TIPThe beeper sounds while the turn sig-nal switch is signaling.3. Check in front of and behind the vehicle to make sure that it is safe
to start off.
4. Release the rear brake lever.
5. Check for oncoming traffic, and then slowly turn the accelerator
grip in order to start off.
6. Push the turn signal switch to can- cel the turn signals.TIPTo protect the battery, the EC-03 is
equipped with an auto-off function. The
power stops automatically if the vehicle
is stopped for more than five minutes. To restart the vehicle after the vehicle
has been stopped for more than five
minutes, turn the key to “OFF” and then
back to “ON” again.
EAU50111
Acceleration and deceleration The speed can be adjusted by opening
and closing the accelerator grip. To in-
crease the speed, turn the accelerator
grip in direction (a). To reduce the
speed, turn the accelerator grip in di-
rection (b).
(a)
(b)
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PERIODIC MAINTENANCE AND ADJUSTMENT
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6
789
NOTICE
ECA11982
Do not use a bulb of a wattage other
than specified to avoid causing ex-
tensive damage to the electrical sys-tem and possibly a fire.
The motor stops while riding
Check the following:1. Is the battery sufficiently charged? Check the battery level indicator. If
the remaining charge is insuffi-
cient, charge the battery before
continuing to ride.
2. Is “HEAT” flashing and did “RUN” go off?
The temperature protection func- tion has been activated. Turn the
key to “OFF”, and allow the vehicle
to cool down before continuing to
ride.
After checking the above, if the motor
still does not run, have a Yamaha deal-
er check the vehicle.
WARNING
EWA15631
Before pushing or moving the
EC-03, be sure to turn the key to
“OFF”. The vehicle may suddenly
start to move if the accelerator grip
is turned while the key is turned to“ON”.
The display and headlight go off
when the key is turned to “ON”
Check the following: 1. Has the vehicle been stopped for more than five minutes?
To protect the battery, the EC-03 is
equipped with an auto-off function.
If the vehicle has been stopped for
more than five minutes, the power
is cut to save the battery charge.
2. Is the battery sufficiently charged? If the remaining charge is insuffi- cient, charge the battery before
continuing to ride.
After checking the above, turn the key
to “ON” again. If the display and head-
light do not come on, have a Yamaha
dealer check the vehicle.
WARNING
EWA15631
Before pushing or moving the
EC-03, be sure to turn the key to
“OFF”. The vehicle may suddenly
start to move if the accelerator grip
is turned while the key is turned to“ON”.
The security lock cannot be un-
locked
If an incorrect security number is en-
tered three times in succession, the se-
curity lock cannot be unlocked even if
the correct security number is entered
after that.
Turn the key to “OFF” and then back to
“ON”, then try entering the correct se-
curity number again.
1. Temperature indicator “HEAT”
1
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