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Inappropriate charging environments and solutions
The hot and cold environments described below can cause charging to enter standby or suspension without fully
charging the battery.
• Summertime charging standby/suspension
If charging in a location receiving direct summer sunlight or immediately after riding, the battery charger
might enter charging standby (all four battery capacity indicator lamps flash slowly). See “Reading the
charging status for battery pack”. This is to automatically stop charging in order to protect the battery from
exceeding the specified temperature while charging. You can avoid charging suspension by starting to charge
with the battery cold or at a room temperature of 15– 25 °C. If charging suspension occurs, move the battery
charger to a cool location to reduce the charging standby time.
• Wintertime charging standby/suspension
Charging standby will occur if the temperature is less than 0 °C. If charging is started and the temperature drops
below this level due to late-night cooling or other factors, charging is suspended and standby mode is entered to
protect the battery. In such cases, restart charging at an indoor location with a temperature of 15–25 °C.
• Noise on televisions/radios/computers
Charging next to televisions, radios, or similar appliances might cause static, flickering images, and other
interference. If this occurs, recharge in a location further away from the television or radio (such as in another room).
If a charging fault occurs during charging, remove the power plug of the battery charger from the socket and wait
for the battery pack/battery charger to cool.
NOTICE
• Do not connect the charging plug of the battery charger with the charging connector of the battery
in a wet state.
• Be sure to connect the charging plug only after the charging connector on the battery pack is completely dry.
Otherwise the battery charger and battery pack may malfunction.
• Do not apply excessive force to the charging plug or pull on the cord with the charging plug connected
to the battery. Otherwise, the plug or connector may be damaged.
• Do not pedal while the charging plug is connected.
Never handle the power plug, charging plug or touch the charger contacts with wet hands. This could result
in electric shock.
TIP
• Charging will start automatically.
• If the display unit is turned on while the battery pack is
charging, all normal displays will be shown, including the
battery capacity indicator, but the assist system will not
function.
• When the battery pack is connected to the battery charger,
the battery charger lamp will flash at approximately 0.2
second intervals to indicate that the battery pack is being
prepared to be charged. Leave it alone and charging will
start normally.
If a charging fault occurs during charging,
remove the power plug of the battery charger from the socket
and wait for the battery pack/battery charger to cool.
Charging the battery with battery pack removed
from the bike
1. Turn the system off with the on/off switch.
2. Use the key from your bike’s ring lock to open the lock of the
battery pack. The key can be removed from the ring lock
after locking your bike.
Removing the battery back from the box:
3. Put the key in the battery pack lock and turn it to the right to
unlock it.
4. Remove the battery pack by pulling it sideways to the left
(using the handle) and then lifting it up and out of the
plug holder.
5. The key can now be removed from the battery pack lock by
turning it to the left. Put the key back in the bike’s ring lock.
6. Remove the cap from the battery pack’s charging contact and
connect the plug of the charger’s cable to the charging contact.
PLEASE NOTE:
Do not connect the charging cable’s plug to the battery pack’s
charging contact when it is wet.
This can seriously damage the battery pack. Only connect the
charger’s cable plug when all connections are completely dry. Do
not apply excessive force to the plug and do not pull the charger
cable while the plug is connected to the charging contact as this
may damage the plug or the cable.
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