Battery Charging - Composite-ARF SPARK Instruction Manual

Composite-ARF SPARK
rotation direction. After that you
should always make these 3 con-
nections in the same orientation,
and you can slip short lengths of col-
ored heatshrink over the the black
wires to mark this for the future.
The two 5S Lipo cells are connected
together (in series) to provide a 10
cell pack (37 volts). Connect the
negative (black) cable from one of
the flight packs to the black cable on
the front of the speed-controller.
Connect the positive (red) cable
from the other pack to the red cable
on the front of the speed controller.
The remaining red and black cables
are connected together for flight,
using the short 'jumper' cable (sup-
plied) with the male 4mm gold con-
nectors on both ends. This is, in
effect, the 'arming' cable that switch-
es 'on' the EDF system, and is the
last cable to be connected before
every flight, and disconnected immediately after-
wards. Make this final connection quickly - or
you will get small spark, which is not dangerous
- but can cause you some 'surprise' the first time
it happens!
When the system is correctly connected and
armed you will get a short musical 'chime' from
the speed-controller to confirm that everything is
OK. Be extremely careful carrying and transport-
ing charged Lipo cells, and at least one of the
connectors on each battery must be taped over,
or protected, so that it is not possible to cause an accidental short circuit.
Make sure that the throttle stick on your transmitter is at the 'idle' position when arming the bat-
teries and connecting the power system, and secure or have a helper hold the plane. Until the
Jeti 99 speed-controller has recognised that the Tx throttle stick on has been set at 'idle' it will
not power up the system, for safety reasons.

Battery Charging

Please exercise extreme caution when charging Lipo batteries, and strictly follow the battery
suppliers instructions. Never charge the Flight battery packs in the plane.
Normally Lipo cells must not be fully discharged, or they will be damaged forever, and should not
be charged at more than 1C. Therefore a 5200mAH pack must not be charged at more than 5.2
Amps. Aim not to use more than 80% of the capacity of each pack - for example if using 5200
packs you should not need to recharge more than 4150mAH each time.
(above) View of the battery & speed-controller connec-
tions. The positive and negative wires from the Lipos with
yellow heatshrink on them are joined together to switch
on (or 'arm') the EDF system ready for flight.
(below) View of the finished Rx & Digi-Switch installation.
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