Sennheiser SK 50 - 04-05 Specifications download pdf (Page 9)

Preparing for use

Inserting and changing the battery pack/batteries

For powering the units, we recommend using the supplied BA 2015

battery pack. The battery pack can be recharged in the L 2015

charger while remaining in the receiver (see “Charging the

rechargeable battery BA 2015” on page 24).

Accupacks ensure economical and environmentally friendly

operation of the tourguide UHF system during daily use.

If no power supply is available for recharging the battery pack, you

can alternatively use 1.5 V AA size batteries.

 Press the two unlocking buttons  and open the battery

compartment cover .

 Insert the battery pack or the batteries as shown on the left.

Please observe correct polarity when inserting the battery pack

or the batteries.

 Close the battery compartment. The battery compartment

cover  locks into place with an audible click.

How to properly use the battery pack or the batteries

For battery pack operation, only use the BA 2015 battery pack in

order to ensure optimum operational reliability. Batteries and

rechargeable battery cells have different discharging curves. The

receiver is able to identify the BA 2015 battery pack and to use it to

full capacity. It also adapts the battery status display according to

the type of power supply used (batteries or battery pack).

Individual rechargeable battery cells will not be identified as

battery packs.

 After use (e.g. during the night), charge the BA 2015 battery

pack of the receiver in the L 2015 charger. The charging time is

approx. 2.5 hours, at which time the unit then switches to trickle

charging.

 If you do not use the receiver for extended periods of time (e.g.

while you are on holiday), remove the battery pack or the

batteries. After three months at the latest, the battery packs will

need a refresh charge in the L 2015 charger. This prevents

damage to the battery pack due to self-discharge.

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Sennheiser SK 50 - 04-05 Specifications Page 9