Specification Desc./Quantity
2 Key 10.5V ÷ 16V
1.5 mA max
3 Maximum output power 500 mW per channel
4 Power consumption vehicle off ~0 mA
in stand-by ~280 mA
at maximum power ~500 mA
5 Frequency response audio 200 Hz - 20 kHz ± 3 dB
intercom 200 Hz - 5 kHz ± 3 dB
6 Microphones -69 dB ± 3 dB one-way
7 Frequency response: audio 200 Hz ÷ 20 kHz ± 3 dB
8 Loudspeakers 8 Ω - 0.5 mΩ
Sealed battery
Airtight battery start-up operations
If the vehicle is provided with an airtight battery, the only maintenance required is the check of its charge
and recharging, if needed.
These operations should be carried out before delivering the vehicle, and on a six-month basis for
storage with open circuit.
Besides upon pre-delivery it is therefore necessary to check the battery charge and recharge it, if re-
quired, before storing the vehicle and afterwards every six months.
INSTRUCTIONS FOR THE RENEWAL RECHARGE AFTER OPEN-CIRCUIT STORAGE
1) Voltage check
Before installing the battery on the vehicle, perform an open-circuit voltage check using a conventional
tester.
- If voltage exceeds 12.60 V, the battery may be installed without any renewal recharge.
- If voltage is below 12.60 V, a renewal recharge is required as explained at 2).
2) Constant-voltage battery instructions
- Constant voltage charge equal to 14.40-14.70V
- Initial charge current equal to 0.3-0.5 x rated capacity
- Charge time:
- Recommended 10-12
- Minimum 6 h
- Maximum 24 h
Constant-current battery instructions
- Charge current equal to 1/10 of the battery rated capacity
- Charge time: 5 h
WARNING
WHEN THE BATTERY IS REALLY FLAT (WELL BELOW 12.6V) IT MIGHT OCCUR THAT 5 HOURS
OF RECHARGING ARE NOT ENOUGH TO ACHIEVE OPTIMAL PERFORMANCE.
GIVEN THESE CONDITIONS IT IS HOWEVER ESSENTIAL NOT TO EXCEED 8 HOURS OF CON-
TINUOUS RECHARGING SO AS NOT TO DAMAGE THE BATTERY ITSELF.
Recharging the battery
Normal bench charging must be performed using the specific battery charger (single) or (multiple),
setting the battery charge selector to the type of battery that requires recharging (i.e., at a current equal
Electrical system X9 Evolution 500
ELE SYS - 74
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