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SAFETY PRECAUTIONS NIMH BATTERIES
1. General
Nickel-metal hydride (NiMH) batteries (accumulators) are energy
storage devices with a high energy density and can present
risks. For this reason, particular care is needed when charging,
discharging, storing and handling.
Read these instructions very carefully before first using the
battery. Do not fail to take note of the warning notices and
instructions for use.
Misuse can lead to risks such as explosion, overheating or fire.
Failure to observe the instructions for use leads to early failure and
other defects.
The instructions should therefore be kept in a safe place and it
is essential that they are handed over to the second user if the
batteries are passed on.
2. Warning notices
• Avoid short-circuits. A short-circuit may well destroy the
product. Cables and connections must be well insulated.
• It is essential when connecting the battery to ensure that the
polarity is correct.
• Original plug connectors and cables may not be cut off or
changed (if need be, use an adapter cable).
• Do not expose the battery to excessive heat or cold or to direct
sunlight. Do not throw in the fire. Do not place the battery in
contact with water or other liquids.
• Charge the battery only with charging units intended for the
purpose. Before charging, always first allow the battery to cool
to ambient temperature. Never charge while hot.
• When charging, place the battery on a non-flammable, heat-
resistant support. There should be no flammable or readily
ignited objects in the vicinity of the battery.
• During charging or operation, never leave the battery
unsupervised.
• Do not fail to keep to the recommended charge/discharge
current. Under no circumstances exceed these maxim values.
• The battery casing must not be damaged. It is essential to
avoid damage by sharp objects such as knives or the like, from
dropping, impact, bending etc. Damaged batteries may no
longer be used.
• Batteries are not toys. They should be kept away from children.
3. Charging instructions
Before they are first used, NiMH batteries must always be
charged. The first charge should not be carried out in rapid charge
mode, otherwise the battery may not reach its full capacity. We
recommend a charging current of 1/10 of its capacity, i.e. charging
at the 10-hour rate.. The maximum charging current for the battery
is 1C (C=nominal capacity of the battery, e.g. for a battery with a
nominal capacity of 2700 mA, the maximum charging current for
the battery is 2700 mA (2.7 A)). Exact information for the charging
current will be marked on the battery.
Charging should be stopped immediately if there is a significant
rise in battery temperature. !!
Completely avoid deep discharge - in no event should the cell
voltage be allowed to fall below 0.9 V.
It is not necessary to always fully discharge the battery before each
charge. Occasionally (e.g. after every 10th charge), however, or if it
has not been used for a long time, it should be discharged before
charging.
Never charge several batteries together from a single charger.
Differing states of charge and capacities can lead to overcharging
and destruction.
4. Storage instructions
Batteries should never be stored at too high a temperature,
otherwise accelerated self-discharge will occur. Cool and dry
storage conditions are also important to avoid contact corrosion,
which leads to poor contact and high contact resistance.
Batteries should never be stored fully discharged.
5. General terms of guarantee
There is a legal guarantee for production and material faults as
applicable at the time of dispatch. No liability is accepted for
normal wear and tear. This guarantee does not apply for defects
attributable to improper use, inadequate maintenance, third-party
interference or mechanical damage. This applies, in particular, to
used batteries and batteries clearly showing signs of use.
Damage and loss of performance due to improper handling and/
or overload are not product faults. Batteries are consumables and
subject to a certain ageing. This is influenced by factors such as the
charge/discharge currents, the charging procedure, the operating
and storage temperatures and the state of charge during storage.
The ageing shows itself in, among other things, an irreversible loss
of capacity. In the model field, where batteries are frequently used
to supply motors, very high currents can flow from time to time.
6. Exclusion of liability
Since we are unable to have any control over charge/discharge,
handling, compliance with assembly and operating instructions,
battery replacement and its care and maintenance, TAMIYA /
CARSON can accept no liability for loss, damage or costs incurred.
Any claim for damages that may result from operation, failure or
faulty operation or that is in any way related thereto will therefore
be refused. We accept no liability for personal injury or material
damage and their consequences that arise from our delivery.
7. Disposal instructions
Batteries are hazardous waste. Damaged or unusable cells must be
disposed of in the correct manner.
No liability for printing errors, we reserve the right to make changes!
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