Operation
Caution: Before connecting a device, always adjust voltage and current according to the device’s needs.
Adjusting with control dials on the E-WERK. Use the special plastic pen (remove from the bottom side of the E-
WERK, hexagonal pen 2.5 mm). When reinserting into the bottom holder, the pen must snap in audibly.
Output voltage: Adjustable from 2.8 V to 13,3 V - in steps of 0.7 V. (This way, mobile devices can be powered/
charged that are run by 1 to 3 serial Li cells or 2 to 9 serial NiCd/NiMh cells.) The integrated voltage converter
prevents the voltage created by the hub dynamo (depending on speed) from exceeding the set value.
Output current: Adjustable from 0.1 A to 1.5 A - in steps of 0.1 A.
Markings between the numbered values are steps for intermediate values:
3.5 V = marking between 2.8 V and 4.2 V
4.9 V = marking between 4.2 V and 5.6 V
etc.
0.1 A = marking between 0 A and 0.2 A
0.3 A = marking between 0.2 A and 0.4 A
etc.
CAUTION. Marking between highest and lowest numbered
value is the respectively highest value:
13.3 V = marking between 12.6 V and 2.8 V
1.5 A = marking between 1.4 A and 0 A
Since the control dials can be switched seamlessly between the maximum and minimum values, please watch
out as to not choosing a wrong (too high!) value.
Only if dynamos without integrated electronic overvoltage protection are used (without the
adjacent symbol), the E-WERK can give of the highest possible amount of energy.
CAUTION. Too high voltage and/or current can destroy the connected device. When changing devices,
the settings must always be adjusted properly. Mind the polarity of the output voltage when using self
tailored cables.
When powering a device, the output voltage of the E-WERK is always to be set to the value that is noted on the
input socket of the device, on the power supply unit or in the instruction manual of the device. This value is
usually stated in connection with one of the following terms: secondary, SEC, output, OUT, or similar. If this
voltage value cannot be set exactly, use the setting closest to it. If a current value (Ampere) is noted, the E-
WERK should be set to the closest possible value accordingly.
If no current value is stated, the current can be determined if charging time and battery capacity are known. For
this purpose, the battery capacity in ampere hours is divided by the charging time in hours. An example: A
battery with a stated capacity of 3.2 Ah and a charging time of 4 h necessitates the current of the E-WERK to
be set to 3.2 Ah / 4 h = 0.8 A.
Powering devices without built in batteries
In general, the E-WERK can power devices without built in batteries. When starting the ride, the output voltage of
the E-WERK slowly increases with the velocity. Therefore, the connected device will not operate before the
necessary minimum voltage is reached. This can be remedied by a cache battery (as offered by different
manufacturers): Before using the battery, set the output voltage on the E-WERK’s control dial according to the
cache battery. Set output current to 1.5 A.
Powering and charging devices without built in batteries
Many mobile devices have a low voltage entrance for powering them with an external power supply unit. Connect
the E-WERK to this entrance. The way that device and battery act when connecting an external power source has
to be differentiated:
