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• Whencharging,placethechargerandrechargeableightbatteryonanon-ammable,heat-resistant
surface(suchasastonetile).Keepthechargerandbatteryawayfromammableobjects.Leaveenough
spacebetweenthechargerandtherechargeableightbattery.
• Do not charge batteries when they are still hot (e.g. due to a high discharge current in the model). Allow
therechargeableightbatterytocooldowntoroomtemperaturebeforechargingit.
• Ensurethatthereissufcientventilation,asthebatteryandchargermayheatupduringthecharging
process. Never cover the charger or the quadcopter battery!
• Neverleave batteriesunattended when theyare charging.Checkthe rechargeableightbattery for
overheatingorbloatingatregularintervals.Thisindicatesanimminentriskofareorexplosion.Ifthe
rechargeableightbatteryoverheatsorstartstoexpand,disconnectitfromthechargerimmediately
andtakeittoalocationwhereitwillnotcauseanyadditionaldamageifitexplodesorcatchesre(e.g.
outdoors).
• Disconnect the quadcopter battery from the charger when the battery is fully charged.
• Never damage the casing of a rechargeable battery. Never charge damaged, leaking or deformed bat-
teries.Thismaycauseareorexplosion!Discontinueuseimmediatelyanddisposeofthebatteryinan
environmentally friendly manner.
• Rechargeable batteries should be charged regularly (approx. once every 2–3 months) to prevent them
from overdischarging. This may result in permanent damage and render the batteries useless.
• LiPo/Li-ion batteries usually retain their charge for several months. However, if the batteries overdis-
charge, this will result in permanent damage and render them useless.
b) Additional information about lithium rechargeable batteries
Modern lithium rechargeable batteries have a signicantly higher capacity than NiMH and NiCd bat-
teries and are more lightweight. This makes LiPo (lithium polymer) or Li-Ion batteries particularly
suitable for use in model making.
However, lithium batteries require particular care to ensure safe charging/discharging, operation
and handling.
The following section provides an overview of the potential hazards associated with lithium batter-
ies and explains how these hazards can be avoided to ensure a long lifespan.
• Thecasingofmanylithiumbatteriesismadeofathicklm,whichisverysensitive.Donotdismantle,
drop or insert any objects into lithium batteries. Do not apply mechanical loads or pull on the battery’s
connectioncables.Thismaycauseareorexplosion!
• Ensure that the lithium battery does not overheat during use, recharging, discharging, transport or stor-
age.Donotplacetherechargeableightbatterynearheatsources,keepitawayfromdirectsunlight.
Thismaycausethebatterytooverheat,whichcancauseareorexplosion!Thetemperatureofthe
battery must not exceed +60 °C.
• Do not charge the battery if it is damaged or if the outer casing starts to swell/expand (e.g. after a crash).
Thismaycauseareorexplosion!
• Neverstoreadamagedrechargeableightbatteryinaatorhouse/garage.Damagedorswollenlithium
batteriesmaycatchre.