MOD-10-1164
sepura
TETRA Terminals
Product Guide
14-09-2012
Page 22 of 46
Issue 11
© Sepura plc 2012
Battery Charging
For
STP8X
radios: The battery must not be charged in a hazardous environment. Do
not use the charger in a hazardous environment.
New battery packs must be fully charged before they are used. The battery must only be
charged using Sepura plc approved battery chargers. If an attempt is made to use a non-
approved battery charger the ATEX/IECEx safety rating will be invalidated and the radio will
switch off. T
his may also invalidate the users‟ insurance.
The Sepura battery charger allows the battery to be charged either while fitted to or removed
from the radio.
S
AFETY
P
RECAUTIONS
Many professional and consumer products from cycle lamps to mobile phones and laptop
computers now use rechargeable lithium polymer cells because of their small size and high
energy density. When charged and used correctly these are reliable and safe. There are
some simple precautions that should be observed when charging and using Lithium polymer
packs. The precautions below apply to most/all Lithium polymer battery packs and chargers.
When the radio is switched on the battery is tested to check that it is an authentic Sepura
battery and, if so, information about the battery may be viewed on the Battery card in the
Radio Information menu. Please see section on Radio Information in the Sepura TETRA
Radios User Guide. If a non-Sepura battery is detected in a STP radio, a warning message is
displayed (“Unidentified battery – Powering Down”) and the radio switches off.
If a Sepura battery is identified, the percentage of charge remaining is then displayed.
Use only Sepura approved chargers for charging Sepura products and Sepura
approved batteries
Sepura batteries are designed to be rugged and to give good service. However, as is the
case for all Lithium polymer batteries, it is possible for extreme mechanical damage to
weaken the internal structure of the cells within the battery. Therefore, if the battery casing
shows signs of severe damage (not the minor scratches and bumps of everyday use), or has
been subjected to major mechanical abuse, the battery should be safely discarded
immediately.
The following warnings and information apply to all STP radios:
The mechanism for measuring the remaining charge in the battery may become
inaccurate over time. To avoid this, periodically run the battery flat in normal use (so
that the radio automatically switches off) and then re-charge the battery fully without
disconnecting it from the charger.
If a battery has been stored for a long time it may go flat and will not be able to power a radio
until it has been recharged. In extreme cases it may be necessary to restart the charging by
disconnecting and reconnecting the charger (or switching the charger off and then on) as
charging will stop after twenty minutes if the battery has not recovered enough charge in that
time to power the radio.
