Bedienungsanleitung Graupner MX-16 HoTT (Seite 8 von 200) (Englisch)

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Safety Notes

Safety notes and handling instructions relating to Nickel-Metal-Hydride rechargeable

batteries

As with all sophisticated technical products, it is vitally

important that you observe the following safety notes

and handling instructions if you wish the equipment to

operate safely and reliably for an extended period.

Safety notes

Individual cells and rechargeable batteries are not •

playthings, and must be kept well away from children.

Store rechargeable cells and batteries out of the

reach of children.

Check that the batteries are in perfect, serviceable •

condition before every use. Do not re-use defective or

damaged cells or batteries.

Rechargeable cells and batteries must be used •

within the speciﬁed limits stated for the correspond-

ing cell type.

Do not heat, incinerate or short-circuit rechargea-•

ble cells or batteries, and never charge them with

excessive currents or reversed polarity.

Never use rechargeable batteries consisting of •

parallel-wired cells, combinations of old and new

cells, cells of different construction, size, capaci-

ty, make, brand or cell type.

Batteries installed inside equipment should always be •

removed from the device when it is not in use and not

about to be used. Always keep equipment switched

off in order to avoid deep-discharged cells. Batteries

must be recharged in good time.

The battery to be charged should be placed on a •

non-inﬂammable, heat-resistant, non-conductive

surface for the whole of the charge period. Keep

inﬂammable and volatile objects and materials well

clear of the charging area.

Batteries must always be supervised when on •

charge. Never exceed the maximum fast-charge cur-

rent speciﬁed for the cell type in use.

If the battery heats up to more than 60°C whilst on •

charge, halt the charge process immediately and

allow the pack to cool down to about 30°C.

Never recharge a battery which is already charged, •

hot, or not completely discharged.

Do not make any modiﬁcations to batteries. Never •

solder or weld directly to cells.

If incorrectly handled, rechargeable batteries are at •

risk of combustion, explosion, corrosive action and

burns. Suitable extinguishing materials include ﬁre

blankets, CO2 ﬁre extinguishers and sand.

Escaped electrolyte is corrosive - do not allow it to •

contact skin or eyes. In an emergency rinse the area

immediately with plenty of clean water before seeking

medical help.

The cells’ air vents must never be blocked or sealed, •

e. g. by solder. When soldering, the iron temperature

should not exceed 220°C, and each joint should be

completed in less than twenty seconds.

To avoid cell deformation, do not exert excessive •

mechanical pressure on battery cells.

If a battery should be accidentally overcharged, use •

the following procedure:

Simply disconnect the battery and leave it on a non-

inﬂammable surface (e. g. stone ﬂoor) until it has

cooled down. Never hold the battery in your hand, as

there is a risk that cells might explode.

Always observe the recommended rates for charging •

and discharging.

General information

The capacity of your rechargeable battery diminishes

with every charge / discharge process. Stored batteries

may eventually exhibit reduced capacity.

Storage

Batteries should not be stored in a completely dis-

charged state. Store them in a dry enclosed space at an

ambient temperature of +5°C to +25°C. If you are storing

a battery for a period longer than four weeks, ensure

that the cell voltage does not fall below 1.2 V

Balancing individual battery cells

To balance new battery cells, i. e. to bring them all •

to the same state of charge, charge them at what

is known as the ‘normal’ rate until they are full. As a

general guideline a fully discharged battery needs to

be charged for a period of twelve hours at a current

corresponding to one tenth of the capacity printed on

the cell label (the “1/10C” method). After this treat-

ment all the cells will be fully charged, and exhibit

the same voltage. This method of balancing battery

cells should be repeated after every ten fast-charge

processes, so that the cells are repeatedly balanced;

this helps to ensure an extended useful life for your

batteries.

If you have the facilities to discharge individual cells, •

we recommend that you make use of this before

every charge process. Otherwise the battery pack

should be run down to a discharge voltage of 0.9

V per cell. For example, this corresponds to a ﬁnal

discharge voltage of 3.6 V in the case of the four-cell

pack used in the transmitter.

Charging

NiMH batteries should only be charged using the speci-

ﬁed currents, charge times and temperature range, and

should be supervised constantly when on charge. If you

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