PANASONIC AVIONICS CORPORATION
Enhanced Cell Modem
ASC-AA8190-01
PROPRIETARY AND CONFIDENTIAL
PAGE 20 OF 22
7.0
BATTERIES
The eCM has a battery for backup power to the Real Time Clock (RTC) and is not used unless aircraft
power is shutoff to maintain time.
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The eCM has a battery for backup power to the Real Time Clock (RTC) and is only used to maintain
the time while the aircraft power is shut off.
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Intended Function: Continuous time keeping; The battery is internal to the LRU and is not accessible to
the aircraft crew.
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Operation condition: 0.8 Ua typical when LRU power is off.
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The battery is a non-rechargeable solid-cathode single cell.
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Material: Poly-carbonmonofluoride Lithium battery. Li (CF).
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The battery contains ~0.039 g of lithium.
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RTCA/DO-227
– Minimum Operational Performance Standards for Lithium Batteries states in 2.1.1.1
cells that contain less than 0.15grams of lithium do not require testing under this MOPS(Minimum
Operational Performance Standard).
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The battery is a fully enclosed component.
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Size: 9.77 H x 14.98 W x 21.84 L mm.
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The battery part number is BR1225.
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The battery manufacturer is Panasonic with UL file# MH1210;
or Rayovac with UL file# MH12542.
The battery is not required for safe operation of the airplane;
The battery is less than 2 Watt-hours;
The battery complies with UL1642.
