GRAUPNER micro EC 135 Manuel page 23

micro EC 135
indoor
Additional notes on handling LiPo batteries
Avoid short-circuits.
Never short-circuit these batteries. Shorting the terminals allows a very high current to flow, and this heats up the cells.
This in turn may lead to a loss of electrolyte, gassing (venting of gas) or even an explosion. When handling Graupner
LiPo batteries keep them well away from conductive objects and surfaces to avoid the danger of a short-circuit.
Mechanical strength of the case film:
The aluminium laminate film which encloses the cells is easily damaged by sharp objects such as pins, knives, nails,
motor terminals or similar: If the film is damaged, the battery is useless, and for this reason the battery must be
installed in the model in a position where it cannot be distorted or damaged even in a bad landing or crash. If the pack
were to be short-circuited, it could burst into flames.
Temperatures above 70° C may also damage the case and cause leaks; this will result in loss of electrolyte, the battery
gets useless and must be disposed of.
Mechanical shock:
LiPo batteries are not as mechanically robust as metal-cased cells, and for this reason you must avoid subjecting them
to mechanical shocks such as dropping, hitting, bending, cutting, scoring, deforming or drilling into the laminate film.
Never bend or twist a LiPo battery, and do not exert pressure on the battery or its connections.
Handling the battery terminals:
The terminals of LiPo cells are not as robust as those of other batteries; this applies in particular to the aluminium +
terminal.. Please note that the terminals can easily break off. Due to the heat transfer it is not possible to solder to the
aluminium terminals. The terminals should be fitted with a suitable strain relief.
Cell connections:
It is not possible or permissible to solder directly to the battery cells.
Attempts at direct soldering may cause damage to cell components such as the separator or insulator. Battery
connections can only be attached by the industrial process of spot welding. If a cable is missing or gets torn off, a
professional repair by the manufacturer or distributor is required.
Replacing individual battery cells:
Individual battery cells may only be replaced by the manufacturer or distributor. This work must never be carried out by
the user.
Re-using damaged cells:
Damaged cells must never be re-used.
Indications of damage include broken housings, distortion of battery cells, escaping electrolyte or a smell of electrolyte.
If your LiPo battery exhibits any of these problems it must not be used again.
Damaged or exhausted cells constitute toxic waste and must be disposed of in the appropriate manner.
General warning notes
LiPo batteries must not be thrown in a fire or incinerated.
LiPo cells must not be allowed to come into contact with fluids such as water, salt water or drinks, even for a very short
period. Avoid all contact with liquids of any type.
Individual cells and packs made up of cells are not playthings, and must not be allowed into hands of children. Store
batteries and cells well out of the reach of children.
Batteries must be kept out of the reach of babies and small children at all times. If a battery should be swallowed, seek
emergency medical attention immediately.
Batteries must not be placed in a microwave oven or subjected to pressure. This may result in smoke and fire or even
worse.
Never dismantle a LiPo battery. Dismantling a pack may cause internal short-circuits, with the possible results of
gassing, fire, explosion and other problems.
LiPo batteries contain toxic electrolytes and electrolyte vapours which are damaging to health. Take great care to avoid
direct contact with electrolyte. If electrolyte contacts your skin, eyes or any other body part, immediately wash it off
using plenty of clean water, then consult a doctor.
Batteries which are build in a device should always be removed if the device is not to be used immediately. Always
switch equipment off after use n order to avoid the cells becoming deep-discharged. Recharge batteries in good time.
Do not use deep-discharged batteries again.
The company of Graupner GmbH & Co. KG is unable to ensure that you use the correct methods to charge and
discharge these cells, and for this reason we are obliged to refute any claim under guarantee if the cells have been
charged or discharged incorrectly.
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