An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Would you stake your life, right now, on the condition of your equipment?
NEWS | July 14, 2022

M4A1 JCAD: Internal Clock Battery Fault? No Need for Alarm

Courtesy Photo
Courtesy Photo 

An internal clock battery in the joint chemical agent detector (JCAD)—designed to last for 10 years—is used for logging accurate date and time data. When the clock battery expires, a fault occurs on the detector’s message line that flashes the words “Clock Battery Low.” However, according to TM 3-6665-456-10 (Apr 14), the JCAD will still function as a chemical detector despite the warning. 

The clock battery is a sealed system that needs to be sent in to the OEM for repair, at a cost of $1130.95 each. What’s not currently stated in the TM is that there’s no need to return the JCAD to maintenance unless retrieval of accurate data logs is required.  

Users should continue performing preventive maintenance checks and services (PMCS) following WP 0017 and Table 1 on Page 0015-9 in TM 3-6665-456-10 (Apr 14).  We’ll alert you when the TM is updated. 

Want to get better search results faster? 
Click the link below to access our "how to" guide
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an address. To update, change the domain to