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RT System 2 v2.3
138
Deployment Guide R01.i
© 2010-2014 Wireless Seismic, Inc. All rights reserved.
7
7.
Batteries
See “Batteries” on page 194 for the French translation of this chapter.
Voir “Batteries” sur la page 194 pour la traduction française de ce chapitre.
This chapter provides information about the batteries and battery requirements used in
the Wireless Seismic, Inc. RT System 2.
7.1 Lithium Ion Batteries
This section provides information regarding the characteristics, use, and handling of
lithium ion batteries. See the following sections for details:
i
“Specifications” on page 138
i
“Handling and Safety Guidelines” on page 139
i
“Transportation” on page 140
i
“Storage” on page 141
7.1.1 Specifications
The RT System 2 uses one or two custom intelligent lithium-ion batteries with self-
contained charging circuitry that protects the batteries from overcharge, discharge,
short circuits, or extreme temperature charging.
Battery specifications are shown in the following table:
Table 7–1 Lithium Ion Battery Specifications
Item
Description
Value
Voltage
Nominal
3.7 VDC
Shut-off
2.8 VDC
Full (90%) charge
4.1 VDC
Overcharge Voltage
4.28 VDC
Over Discharge Voltage
2.80 VDC
Current
Maximum Charge Current
2 A
Consumption Active Mode
4.2 mA maximum
Consumption Sleep Mode
66
P
A maximum
Full (90%) charge mAh
Approximately 12,000 mAh at
nominal voltage
—
Full (90%) charge mWh
Approximately 44,400 mWh
at nominal voltage
—
Capacity
48.8 Watt hours