Cycle Computer; Basic Control - DEMA FLOW Operation And Maintenance Manual

Battery protection
The Li-ion battery in your E-bike is equipped with its own control unit - BMS (Battery Manage-
ment System). This system monitors and controls charging and discharging and also serves as
a protection against deep discharge or overcharging. However, if the battery is automatically
switched off by BMS, do not attempt to restart the system and do not continue using engine
assistance. It may cause deep discharge of the battery cells and its irreversible damage. This
damage can be diagnosed but is not covered by warranty service. Recharge the battery as
soon as possible.
Warning:
Use only the charger supplied with your E-bike. The battery charger can be used only indoors.
Avoid any contact with water or other fluids while charging the battery. If the battery charger
or any connectors become wet, immediately unplug the charger and dry all components before
battery charging. Charging is permitted only in the temperature range 0 ~ 40 °C!
Storage
With daily use, it is not necessary to remove the battery from the frame. If the bike will not
be used for a long time, always remove the battery, store it in a dry and safe place in the tem-
perature range 5 - 25 ° C. Recommended environment for storing batteries is a dry place with
a constant temperature of between 15 - 20 ° C. (Temperatures below freezing point, but also
too high temperatures are not suitable for storing the batteries. Storage temperatures above
40 ° C are too high for long-term storage!) Be careful not to short-circuit the battery contacts
when storing or handling batteries. During the long-term storage, such as off-season, charge the
battery to its full capacity and recharge the battery to this level at least once in every 4 months.
Disconnect the battery from the charger when fully charged. Do not leave the fully charged bat-
tery connected to the charger.
Range
The range of your E-bike is affected by many factors including:
- Selected degree of assistance
- Profile of selected route
- Total weight of a cyclist and baggage
For maximum range, fully recharge the battery and check the technical condition of your E-bike
before each ride. With correct gear choice and correct level of assistance, range on a single
charge can be significantly increased as unnecessary battery power is not used.
Transport
Li-ion batteries are subject to many regulations, often are considered dangerous material by
carriers. Be sure to check relevant legal regulations, ask the carrier for approval prior to ship-
ping a lithium-ion battery, or transport by air.
Warranty
Warranty period of the battery is 24 months from the purchase of the E-bike. During this
period, the nominal capacity should not fall below 70% of its declared capacity.
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- Battery state-of-charge
- Weather conditions
- Tire inflation pressure, etc.
E-bike operation and maintenance manual

4. Cycle computer

DP C230 is designed to control the Bafang system and to display driving data.
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Computer buttons
(1) On/Off; (2) Up; (3) Down;
Display
(1) The display shows an icon of light, if the light is on. USB charging indicator displays the
icon, if an external USB device is connected to the display; (2) Speed display; (3) Mode selec-
tion – Daily kilometers (TRIP) - Total kilometers (ODO) - Top speed (MAX) - Average speed
(AVG) - Range (RANGE) - Output power (POWER) - Energy Consumption (CALORIES) - Travel
time (TIME); (4) Power assistance level indication/push assistance – Briefly press (0.5S) + or
- to switch the level. Touch and hold (2S) - to start the mode Push assistance, display symbol;
(5) Battery indication; (6) Speed unit (km/h or mph);

4.1. Basic control

ON/OFF Switch
Turn on the power, press and hold (>2S)
Press and hold (>2S) again to power off the display. If the bike is not used, after 5 minutes the
display will be automatically turned off. If the password function of the display is activated, you
need to input the correct password to enter into the normal display interface.
Power assistance level selection
In the manual gearshift mode, briefly press (<0.5S)
+ or - to switch the level to change the assistance
power, The lowest level is Level 1 the highest Level 5.
When the display is on, the default mode is Level 1.
Push assistance mode
Press and hold (>2S) - to enter into push assistance mode, the symbol
is displayed. When release key -, will exit the push assistance mode.
E-bike operation and maintenance manual
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to power on the display, the display begins to operate.
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