About Cabling Installation & Maintenance

Our mission: Bringing practical business and technical intelligence to today's structured cabling professionals

For more than 30 years, Cabling Installation & Maintenance has provided useful, practical information to professionals responsible for the specification, design, installation and management of structured cabling systems serving enterprise, data center and other environments. These professionals are challenged to stay informed of constantly evolving standards, system-design and installation approaches, product and system capabilities, technologies, as well as applications that rely on high-performance structured cabling systems. Our editors synthesize these complex issues into multiple information products. This portfolio of information products provides concrete detail that improves the efficiency of day-to-day operations, and equips cabling professionals with the perspective that enables strategic planning for networks’ optimum long-term performance.

Throughout our annual magazine, weekly email newsletters and 24/7/365 website, Cabling Installation & Maintenance digs into the essential topics our audience focuses on.

  • Design, Installation and Testing: We explain the bottom-up design of cabling systems, from case histories of actual projects to solutions for specific problems or aspects of the design process. We also look at specific installations using a case-history approach to highlight challenging problems, solutions and unique features. Additionally, we examine evolving test-and-measurement technologies and techniques designed to address the standards-governed and practical-use performance requirements of cabling systems.
  • Technology: We evaluate product innovations and technology trends as they impact a particular product class through interviews with manufacturers, installers and users, as well as contributed articles from subject-matter experts.
  • Data Center: Cabling Installation & Maintenance takes an in-depth look at design and installation workmanship issues as well as the unique technology being deployed specifically for data centers.
  • Physical Security: Focusing on the areas in which security and IT—and the infrastructure for both—interlock and overlap, we pay specific attention to Internet Protocol’s influence over the development of security applications.
  • Standards: Tracking the activities of North American and international standards-making organizations, we provide updates on specifications that are in-progress, looking forward to how they will affect cabling-system design and installation. We also produce articles explaining the practical aspects of designing and installing cabling systems in accordance with the specifications of established standards.

Cabling Installation & Maintenance is published by Endeavor Business Media, a division of EndeavorB2B.

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What Really Occurs When Lithium Batteries Are Paralleled? Uncovering Voltage and BMS Dynamics

Imagine two water buckets connected by a pipe. This is like connecting lithium batteries in parallel. The water level represents voltage, and the flow represents electric current. Let’s break down what happens in simple terms:

Scenario 1: Same Water Level (Matched Voltage)​​

When both "buckets" (batteries) have identical water levels:

  • Charging (adding water):​​Current splits evenly between batteries
  • Discharging (pouring out):​​Both batteries contribute power equallyThis is the ideal and safest setup!

​Scenario 2: Uneven Water Levels (Voltage Mismatch)​​

When one bucket has higher water level:

  • Small difference (<0.5V):​​Water flows from high to low bucket slowlyA ​​smart faucet (BMS with parallel protection)​​ controls the flowLevels eventually balance
  • ​​Large difference (>1V):​​Water rushes violently to the low bucketBasic protection shuts down the connection

lithium battery connectionparallel battery safety

Scenario 3: Different Bucket Sizes (Capacity Mismatch)​​

Example: Small battery (24V/10Ah) + Large battery (24V/100Ah)

  • ​​Same water level (voltage) required!​​
  • Discharging at 10A:​​Small battery supplies ~0.9ALarge battery supplies ~9.1A
  • ​​Key insight:​​ Both water levels drop at same speed!

NEVER Mix These!​​

​​Different pump types (discharge rates):​​

  • Strong pump (high-rate battery) pushes too hard
  • Weak pump (low-rate) gets damaged quickly
  • Can cause overheating or fire!

3 Golden Safety Rules​​

  1. ​​Match water levels:​​ Check voltage with multimeter (difference ≤0.1V)
  2. Use smart faucet:​​ Choose BMS with ​​parallel current control​​
  3. Same bucket type:​​
    • Identical capacity
    • Same chemistry (e.g., both LiFePO4)
    • Matching pump power (discharge rate)

Pro tip: Parallel batteries should behave like twins!

Media Contact
Company Name: DALY BMS
Email: Send Email
Country: China
Website: https://www.dalybms.com/

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