GRAUPNER Polaron EX Operating Instruction page 23

- When used correctly, Lithium ion/Polymer/Fe battery packs are as safe as any other type of rechargea
ble battery pack. However they do require different charge regimes to the longer established Nickel
Cadmium and Nickel Metal Hydride technologies and have the potential of catching fire if severely
mistreated.
- If Lithium Polymer battery packs are short-circuited or severely over-charged elemental Lithium may be
deposited internally, and if the battery pouch is damaged this can escape from inside the battery. If this
occurs a fire may be caused, as elemental Lithium is highly reactive when exposed to water or moisture,
producing flammable hydrogen gas and corrosive fumes. Elemental Lithium is not produced unless the
battery pack is severely mistreated, so in normal usage there is no likelihood of explosion or fire.
- Lithium Ion/Polymer battery packs must NEVER be discharged below 3 volts per cell (Li-Fe 2.0V) as
this will result in damage to the cells. If the voltage is allowed to drop below 3 volts per cell the
battery voltage may seem to recover following a charge, but the battery may not then give its full
nominal capacity and a reduction in performance is likely-allowing the voltage to drop below 3 volts per
cell will invalidate all warranty claims.
- Never charge Lithium Polymer battery packs at greater than 4.2V per cell, Lithium Ion at 4.1V volts per
cell or LiFe at greater than 3.7V per cell as this will cause irreversible damage to the cells and will
invalidate all warranty claims.
- Never charge Lithium battery packs above their maximum charge rate. This can damage the pack and
can be dangerous. Generally, Lithium Polymer packs should not be charged above 2C (2 x Capacity).
However, some newer packs do allow charging at up to 5C, but charging at these higher rates will
reduce the life of the pack.
e.g Pack of 2500mAh capacity : 2C = 5000mAh = 5A max
- Do not use discharge rates in excess of those specified with the battery pack as this will result
in a significant drop in voltage under load and will dramatically reduce the number of
charge/discharge cycles the battery pack will give. If disposing of Lithium battery packs ensure
that the pack is fully discharged by using a light bulb, electric motor or similar to completely
discharge the pack.
Do not allow any Lithium battery pack to short-circuit as this is likely to result in a
minor explosion and consequent fire.
- Before charging any Lithium battery packs they should be closely inspected for any damage,
such as punctures in the sleeving or if the battery has swollen or expanded in size. If any
such damage is detected Do not charge, even if the battery otherwise appears to be brand
new.
- Before commencing charging always double check the settings on the charger to ensure it is
set correctly for the battery pack to be charged. Using the wrong settings is likely to result in
damage to the battery pack being charged and could result in the battery catching fire.
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◎ COMPLIANCE INFORAMTION FOR THE EUROPEAN UNION
Declaration of Conformity
NO. BCT13CC-0279E
Product(s): POLARON EX DC Battery Charger
Item Number(s): S2011
The object of declaration described above is in conformity with the requirements of the
specifications listed below, and accordance with the following applicable
directives: 2004/108/EC Electromagnetic Compatibility
EN55014-1:2006+A1:2011
EN55014-2:1997+A2:2008
ENVIORNMENTAL PROTECTION NOTES
This product must not be disposed of with other waste. Instead,
it is the user's responsibility to their waste equipment by handing it over to
a designated collection point for the recycling of waste electrical and
electronic equipment. The separate collection and recycling of
your waste equipment at the time of disposal will help to conserve natural resources and
ensure that it is recycled in a manner that protects human health and the environment. For
more information about where you can drop off your waste equipment for recycling, please
contact your local city office, your household waste disposal service or where you purchased
the produce
www.graupner-sj.com
www.openhobby.com
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