Installation Guide

18 Introduction
Backup Battery
To provide power to the ECN unit during extended power outages, the ECN can
optionally be fitted with a backup battery. The ECN enclosure includes a
separate compartment for the battery module. Within this compartment, a blind-
mate electrical connector allows easy installation for the battery module. This
separate compartment is weather tight and provides shielding from sensitive
electronics and radios. Figure 7 shows the battery pack, after it is removed from
the ECN.
The ECN uses intelligent battery charging techniques (similar to those found in
laptop computers) to maximize the life of the battery. That is, the ECN
constantly monitors the state of the Lithium Ion cells used in the module to
ensure long life and reliable operation. A typical charge cycle can take up to 4
hours. Each battery pack has an operating life of approximately 10 years.
Figure 7. Battery Pack
The battery module is capable of providing up to 24 W of power for at least 15
minutes.
Table 2. Battery Pack Specifications
Specifications Dimensions and Weight
Voltage (Output): 12.1 V ±3%
Current: 2 A
Run Time (Full Charge): >15 minutes
Operating Temperature: -40°C to +50°C
Dimensions (including panel):
H: 100 mm (3.9 in)
W: 36 mm (1.4 in)
D: 267.4 mm (10.5 in)
Weight: 320 g (0.7 lb)