SkyRC e6650 - Manual (Page 9)

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WARNING AND SAFETY NOTES
To avoid short circuit between the charge lead always connect
the charge cable to the charger first, then connect the battery.
Reverse the sequence when disconnecting.
Do not connect more than one battery pack to this charger at
any one time.
Never attempt to charge or discharge the following types of
batteries.
A battery pack which consists of different types of cells
(including different manufacturers)
Batteries that are not expressly stated by the manufacturer to
be suitable for the currents the charger carries during the
charge process.
Batteries installed in a device or which are electrically linked to
other components.
A battery fitted with an integral charge circuit or a protection
circuit.
A faulty or damaged battery.
Batteries that require a different charge technique from NiCd,
NiMh, LiPo or Gel cell (Pb, Lead acid).
Non-rechargeable batteries (Explosion hazard).
A battery that is already fully charged or just slightly discharged.
Please bear in mind the following points before commencing
charging.
Did you select the appropriate program suitable for the type of
battery you are charging?
Have you checked the battery voltage? Lithium battery packs
can be wired in parallel and in series, i.e. a 2 cell pack can be
3.7V (in parallel) or 7.4V (in series).
Did you set up adequate current for charging or discharging?