Internal Resistance Readings_Blog Images_Header_1600px.jpg

Turning Internal Resistance Readings into a Usable Trend

Nov 11, 2026

A single internal resistance reading shows what a battery measured at one point in time. By itself, it offers little history. The CELLGUARD™ Wired Battery Monitoring System (BMS) tests internal resistance at a configured interval and presents the results as a trend, so operators can see how performance changes over time. 

FROM MEASUREMENT TO HISTORY

Each test adds a data point to a battery’s record. Operators can see whether internal resistance stays consistent or changes, and investigate batteries that may need attention.


 

ADDED CONTEXT

Internal resistance does not have to be evaluated alone. CELLGUARD™ Wired also monitors battery voltage and temperature, along with string voltage, string current and ambient temperature. Discharge events are recorded automatically.


 

CENTRALIZED REVIEW IN UNITE™

UNITE™ Battery Asset Management Software provides historical timelines and data visualization at the plant, string and individual battery level. Battery attributes can also be compared among batteries within a string.


 

MEASUREMENTS NEED HISTORY

Regular testing establishes the measurements. Trending supplies the context needed to understand how they are changing.


 

cellguard-base-coordinator-unit-hero.psd

CONTINUOUS, 24-7 BATTERY STATE-OF-HEALTH MONITORING

The CELLGUARD™ Wired Battery Monitoring System (BMS) delivers economical, yet highly
accurate and reliable remote health analysis of UPS system batteries in applications with high electromagnetic noise.

Personnel are provided with continuous 24/7 monitoring of key battery performance indicators to help enable proactive maintenance, ensure battery performance, and deliver uninterrupted power when it matters the most. Ideal for all mission- critical DC power plants including UPS systems.

LEARN MORE
< All News