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RT System 2 v2.3 Deployment Guide
141
© 2010-2014 Wireless Seismic, Inc. All rights reserved.
7. Batteries
Charging Lithium Ion Batteries
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Outer package is labeled with the current required label. An example is shown in the
previous figure (“Example Battery Shipping Label” on page 140).
7.1.4 Storage
Proper storage and maintenance of Lithium Ion batteries is essential to maximize their useful
life and avoid catastrophic failure. Observe the following storage precautions:
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Remove the batteries from the WRU for storage
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The recommended storage temperature for Lithium ion batteries is as follows:
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From -20°C to +45°C for a maximum period of one month
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From -20°C to +35°C for a maximum of 6 months, after which time the battery
packs will need to be recharged to above 50% capacity
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Storing at cooler temperatures slows down self discharge and capacity loss over
time. Store the batteries at 25°C or less if possible
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The recommended storage charge levels are as follows:
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Charge (or discharge) batteries to a 30% to 50% charge level before placing into
storage. Higher or lower charge levels can reduce the battery life.
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Never store the battery completely depleted of charge unless for disposal.
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Periodic charging is necessary to maintain 30% to 50% charge when stored for a
long period of time
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Store batteries in a well ventilated area
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Do not leave batteries unused for extended periods of time, either in the product or in
storage. When a battery has been unused for 6 months, check the charge status and
charge or dispose of the battery as appropriate.
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Routinely check the battery’s charge status
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Consider replacing the battery with a new one if you note either of the following
conditions:
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The battery run time drops below about 80% of the original run time
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The battery charge time increases significantly
7.2 Charging Lithium Ion Batteries
7.2.1 Charging Precautions
Observe the following charging precautions:
NOTE
The information contained in this document is intended to provide general
awareness of battery regulations; it is not comprehensive, and the requirements
referenced herein may have changed. Nothing in this chapter or the Deployment
Guide constitutes legal advice or is intended to address any specific legal,
compliance, or regulatory issues that may arise in particular circumstances. This
chapter and the Deployment Guide are not intended to replace current, official
regulations regarding the packaging and shipment of hazardous materials or
independent legal counsel on these issues. You are solely responsible for
compliance with all applicable laws, regulations, and other requirements. Please
refer to an official copy of the current version of these documents for the latest
information.
