User's Manual

Draft

RT System 2 v2.0.0 66 Deployment Guide R00.e

7. Batteries

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:

● “Specifications” on page 66

● “Handling and Safety Guidelines” on page 67

● “Transportation” on page 68

● “Storage” on page 69

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 A maximum

Full (90%) charge

mAh

Approximately 12,000

mAh at nominal voltage

—

Full (90%) charge

mWh

Approximately 44,400

mWh at nominal voltage

—