Reely Gravity FPV RtF, Operating Instructions Manual

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•  Place the charger and the quadrocopter/rechargeable flight battery onto a non-flammable, heat-resistant 

surface (e.g. stone tiles). Keep the charger and battery away from flammable objects. Leave enough 

distance between the charger and the quadrocopter/rechargeable flight battery.

• 

Do not charge batteries when they are still hot (e.g. due to a high discharge current in the model). Allow 

the rechargeable flight battery to cool down to room temperature before charging it.

•  As the charger as well as the rechargeable flight battery heat up during the charging procedure, it is 

necessary to ensure sufficient ventilation. Never cover the charger and the rechargeable flight battery!

• 

Never leave batteries unattended when they are charging. Inspect the charger at regular intervals to 

ensure that the battery is not overheating or expanding. This indicates an imminent risk of a fire or 

explosion. If the rechargeable flight 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 rechargeable flight battery from the charger when the battery is fully charged.
• 

Never damage the casing of a rechargeable battery. Never charge damaged, leaking or misshapen bat

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teries. This may cause a fire or explosion! Discontinue use immediately and dispose of the battery in an 

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 

overdischarge, this will result in permanent damage and render them useless.

b) Additional information about lithium rechargeable batteries

Modern lithium rechargeable batteries have a significantly higher capacity than NiMH and NiCd bat

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teries and are more lightweight. This makes LiPo (lithium polymer) or Li-ion batteries particularly 

suitable for use in the model making industry. 
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.

•  The casing of many lithium batteries is made of a thick film, which is very sensitive. Do not dismantle, 

drop or insert any objects into lithium batteries. Do not apply mechanical loads or pull on the battery’s 

connection cables. This may cause a fire or explosion! 

•  The rechargeable flight battery can either be charged separately or inside the quadrocopter. Since the 

rechargeable flight battery is screwed into the quadrocopter, we recommend that you charge the re-

chargeable flight battery inside the quadrocopter.  This way it will not need to be unnecessarily disman-

tled.

• 

Ensure that a lithium rechargeable battery does not overheat during use, recharging, discharging, trans

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port or storage. Do not place the rechargeable flight battery (or the quadrocopter with the rechargeable 

flight battery inside) near heat sources and keep it away from direct sunlight. This may cause the battery 

to overheat, which can cause a fire or explosion! The temperature of the rechargeable battery must 

never 60 °C.