7. Notes on Batteries and
Rechargeable Batteries
Although batteries and rechargeable batteries are commonly used nowadays, they pose numerous
dangers and problems. Especially with LiPo/LiIon rechargeable batteries with their high energy content
(in comparison with conventional NiCd or NiMH rechargeable batteries), various regulations must be
observed as otherwise there is danger of explosion and fire.
Thus, be sure to observe the following information and safety instructions when handling batteries and
rechargeable batteries.
• Keep batteries/rechargeable batteries out of the reach of children.
• Do not leave the batteries/rechargeable batteries lying around openly; there is a risk of them being swallowed by
children or pets. If swallowed, consult a doctor immediately!
• Batteries/rechargeable batteries must never be short-circuited, dismantled or thrown into fire. There is danger of
explosion!
• Leaky or damaged batteries/rechargeable batteries may cause caustic burns if they come into contact with skin.
Therefore, you should use suitable protective gloves.
• Do not recharge normal batteries. There is a risk of fire and explosion! Only charge rechargeable batteries intended
for this purpose. Use suitable battery chargers. Normal batteries (1.5 V) are meant to be used once only and must be
disposed of when empty.
• When inserting batteries/rechargeable batteries or when connecting a battery pack or a charger, observe the correct
polarity (positive/+ and negative/-). Wrong polarity damages the transmitter, the model helicopter and the rechargeable
batteries. There is also a risk of fire and explosion.
• Always replace the entire set of batteries or rechargeable batteries. Do not mix full batteries/rechargeable batteries
with half-full ones. Always use batteries or rechargeable batteries of the same type and manufacturer.
• Never mix batteries and rechargeable batteries! Either use batteries or rechargeable batteries for the remote control.
• If the device is not used over a long period of time (e.g. during storage), remove the inserted batteries (or rechargeable
batteries) from the remote control to prevent damage from leaking batteries/rechargeable batteries.
Caution!
After the flight, the flight battery must be disconnected from the helicopter. Do not leave the flight battery
connected to the helicopter if you do not use the helicopter (e.g. during transport or storage). Otherwise,
the flight battery might be fully discharged and rendered destroyed/unusable!
• Recharge rechargeable batteries about every 3 months, as otherwise they might be fully discharged due to self-
discharge, which renders the rechargeable batteries useless.
• The supplied charger (wall power supply and balancer) may only be used with the provided LiPo battery. Never try
to use it for charging different accumulators (NiCd or NiMH)! There is a risk of fire and explosion! The wall power
supply is not suited for charging rechargeable batteries in the remote control!
• Never charge the flight battery immediately after use. Always allow the flight battery to cool down to room temperature
first.
Only charge intact and undamaged rechargeable batteries. If the external insulation of the rechargeable battery is
damaged or if the rechargeable battery is deformed or bloated, it must not be charged. In this case there is immediate
danger of fire and explosion!
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