User manual

Safety Instructions | 7
interference. The rotors could start up inadvertently and cause damage or injury.
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Rechargeable LiPo batteries are very susceptible to moisture due to the chemicals they
contain!Donotexposethemtomoistureorliquids.Riskofexplosion!
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DonotexposethechargerorLiPoightbatterytohigh/lowtemperaturesortodirect
solar radiation. When handling LiPo batteries, observe the special safety information
of the battery manufacturer!
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NeverchargetheLiPoightbatteryimmediatelyafteruse.AlwaysleavetheLiPoight
batterytocooloffrst(atleast5-10minutes).
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Only charge intact and undamaged 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reandexplosion!
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NeverdamagetheexteriorofaLiPoightbattery.Nevercutthecoveringfoil.Never
stabanyLiPoightbatterieswithpointedobjects.
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As the charger and the rechargeable LiPo ight battery both heat up during the
chargingprocedure,it is necessary toensure sufcient ventilation. Nevercoverthe
chargerortheLiPoightbattery!Ofcourse,thisalsoappliesforallotherchargersand
rechargeable batteries.
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RemovetheLiPoightbatterythatistobechargedfromthemodelandplaceitona
re-proofsupport(e.g.aplate).Keepadistancetoammableobjects.
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DisconnecttheLiPoightbatteryfromthechargerwhenitisfullycharged.
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Chargersmayonlybeoperatedindryrooms.ThechargerandtheLiPoightbattery
must not become damp or wet.
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Never take the rechargeable battery apart! The rechargeable battery may not be
subjected to any mechanical strain!
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Thecontactsmaynotbeshort-circuited,asthereisdangerofreandexplosion!
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Donotexposerechargeablebatteriestore,asthereisariskofexplosion!
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Keep rechargeable LiPo batteries away from children. Store rechargeable batteries in
a dry, cool place.
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If a rechargeable battery is deformed or damaged during a crash, it must no longer be
used. The same applies for “swollen” rechargeable batteries, or rechargeable batteries
with other visible deformation or leaks. Do not attempt to charge such rechargeable
batteries!Dangerofreandexplosion!Disposeofsuchrechargeablebatteriesinan
ecologically sound fashion.
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The general hazard notices for handling batteries and rechargeable batteries also
apply to rechargeable LiPo batteries.
Total discharge
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Since discharging below 3.0 V per cell would lead to permanent damage of the
rechargeable battery pack, this total discharging is to be prevented as far as possible.
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Forsafetyreasons,programmablecruisecontrols/ightcontrolsystemsshouldbeset
in such a way that the undervoltage detection has already responded before a voltage
of 3.0 V per cell is reached (e.g. 3.2 V). Alternatively, optical undervoltage displays are
also recommended.
Correct dimensioning
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As the current drawn rises, the battery pack warms and the usable capacity is lowered.
The ideal operating temperature during discharge is between
+20 and +40 °C and must
not exceed
+60 °C even under extreme load.
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The maximum short-time discharge current is stated in the technical data sheets or can
be read directly from the battery pack. The value “C” always refers to the capacity value
of the respective battery pack.
Example:
A battery pack with a capacity of 2100 mAh and ”20 C” can be dis-charged with 2100
mA x 20 = 42 A maximum.
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However, the maximum permissible continuous current is clearly lower. If there are no
precisemanufacturer’sspecications,thebatterypackshouldnotbedischargedwith
more than approx. 50 % of the maximum permissible surge current over a long term.