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•
Never charge the helicopter battery immediately after use. Always allow the flight battery to cool down
until it has reached room or ambient temperature again.
• Only charge intact and undamaged rechargeable batteries. Do not charge the rechargeable battery if the
external insulation of the rechargeable battery is damaged, or if the rechargeable battery is deformed or
swollen. In this case there is serious danger of fire and explosion!
•
Never damage the external casing of the helicopter battery. Do not tear the film cover or prick the heli
-
copter battery with sharp objects. This may cause a fire or explosion!
•
The flight battery should be placed on a non-flammable, heat-resistant surface (e.g. a stone tile) while
charging. Keep the charger and drive battery away from flammable objects.
• Do not charge batteries when they are still hot (e.g. due to a high discharge current in the model). Allow
the battery to cool down to room temperature before charging it.
•
Adequate ventilation must be ensured since the charging cable and flight battery can get hot during the
charging process. Never cover the charging cable and flight battery!
•
Never leave the flight battery of the model aircraft unattended while it is charging. Inspect the charger at
regular intervals to ensure that the rechargeable battery is not overheating or expanding. This indicates
an imminent risk of fire or explosion! If the battery overheats or starts to expand, disconnect it from the
charger immediately and take it to a location where it will not cause any additional damage if it explodes
or catches fire (e.g. outdoors).
•
Disconnect the charging cable from the flight battery when it is fully charged.
b) Additional information about lithium rechargeable batteries
Modern lithium rechargeable batteries are much more powerful and significantly lighter than NiMH
rechargeable batteries. This makes lithium batteries (especially lithium polymer batteries) particu-
larly suitable for use in model making.
However, lithium rechargeable batteries require particular care to ensure safe charging/discharg-
ing, operation and handling.
The following section provides an overview of the potential hazards associated with lithium re-
chargeable batteries and explains how these hazards can be avoided to ensure a long lifespan.
•
The casing of many lithium rechargeable batteries is made of a thick film, which is very sensitive. Do not
dismantle, damage, drop or insert any objects into lithium rechargeable batteries!
Do not apply mechanical loads or pull on the rechargeable battery’s connection cables. This may cause
a fire or explosion!
Pay attention to this when the rechargeable battery is attached to or removed from the model.
• Ensure that the rechargeable battery does not overheat during use, recharging, discharging, transport or
storage. Do not place the rechargeable battery near heat sources and do not expose it to direct sunlight.
Overheating of the rechargeable battery may cause a fire or explosion! The temperature of the recharge
-
able battery must not 60 °C. (If necessary follow additional manufacturer specifications for the
rechargeable battery!).
• Use special carry bags to carry LiPo rechargeable batteries, which can lessen the consequences of a
sudden fire or explosion.
• If there are any signs of damage or the outer casing starts to swell or bloat, discontinue use immediately.
Do not continue to charge it. This may cause a fire or explosion!
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