80% of UPS failures are due to undetected battery problems. All batteries fail, its just a matter of time. If you’re operating mission critical systems and relying on the protection of a UPS and battery bank, then it has to make sense to have battery monitoring. It’s about peace of mind – knowing that the batteries are healthy and being constantly monitored. Knowing that everything has been done, that can be done, to protect your enterprise from the consequences of a power failure.

It only takes the failure of one battery to compromise the entire battery string. It is often assumed that batteries are meticulously maintained, but this is rarely so. Many batteries are not inspected or maintained beyond an annual UPS service visit. Unknown and undetected battery failures become apparent right at the time when you need the batteries the most – during a mains failure. UPS systems provide only rudimentary battery monitoring.

The UPS cannot identify faults within individual batteries, nor detect an imbalance in the performance of multiple strings. To ensure the integrity of the battery system, it is necessary to detect failing blocks before they affect the performance of the entire system. T he effectiveness of a battery monitoring system is proportional to the number of points that are monitored and the frequency that this occurs. With regular monitoring comes the accumulation of data, the ability to report and spot trends, and the ability to take timely remedial action.

Sentinel System provides the most advanced and most cost-effective tool for monitoring and managing stand-by battery banks. PowerShield’s continuous data sampling, reporting and battery management capability delivers reduced costs, gives peace of mind, and most importantly – ensures that you have batteries that perform when needed.


  • Wireless Communication
  • Easy Installation & Save Cost
  • Graphic LCD Touch Screen
  • Real Time Monitoring: Block Voltage, Block Impedance, Temperature, String Voltage & Current.
  • Equalize and Balance Block Voltage
  • Extend Battery Life Time
  • Alarm via Email & Dry Contact
  • Build in Storage Memory for Battery History Database
  • Colorful Bar/Curve Diagrams
  • User-default Configurations & Deviation Levels
  • Designed to allow IEEE/IEC best practice.
  • Provides Ethernet/RS-485 for Remote Monitoring


BMS-DC-LCDⅡ (Data Collector)
Display Graphic Touch Screen
Input Power Supply 12Vdc
Power Consumption = 9W
Communication Ports Ethernet x 1, RS-485 Modbus RTU x 1 Output Dry Contact Port x 3,  Input Dry Contact Port x 1
Monitoring  RF Receiver Up to 63 RF Receivers
Manage Nodes Maximum 750 nodes
Storage Media Up to16 Gigabyte SD/MMC Flash Memory Card
Dimensions (WxHxD) 260 mm x 150 mm x 57 mm/10.2″ x 5.9″ x 2.2″
WeightPower supply [10W]: 0.85 kg / 1.9 lbs
BMS-RFR (RF Receiver)
Input Power Supply 12Vdc
Power Consumption ≤ 3W
Receiving Interface RF 2.4 GHz for wireless 1
Monitoring Nodes Maximum 256 nodes
Dimensions (WxHxD) 129 mm x 70 mm x 35.5 mm / 5.1″ x 2.7″ x 1.4″
Weight 0.4 kg / 0.9 lbs
BMS-BMK (Battery Measure Kit)
Block Voltage 2V/6V/12V
Voltage Measurement Range 1.48-4.00V/ 4.2-8.0V/8.5-16V
Accuracy ±5mV/±5mV/10mV
Battery Impedance Resolution see the datasheet
Temperature Measurement 0-100°C ±1°C / 32
Power Consumption = 0.5 W
Input Impedance ≧ 1 MO
Dimensions (WxHxD) 100 mm x 27 mm x 70 mm / 3.9″ x 1.1″ x 2.8″
Weight 0.1 kg / 3.4 ozs
BMS-SMK (String Measure Kit)
Voltage Measurement Range Up to 750Vdc
Accuracy ±0.2% of normal voltage
Temperature Measurement 2 0-100°C ±1°C / 32
Current Measurement 3 0-3000 A
Input Power Supply Range 35-60 VDC
Power Consumption =  3 W
Input Impedance ≧ 1 MO
Dimensions (WxHxD) 100 mm x 27 mm x 70 mm / 3.9″ x 1.1″ x 2.8″
Weight 0.09 kg / 3.1 ozs
1 Maximum transmitting distance is rated at 50m/164ft in a non-concealed room or cabinet. Recommended distance is less than 20m/65ft for optimal performance.   

2 Optional Temperature Sensor (TES) is required for temperature measurement.

3 Optional Hall Current Transformer (HCT) is required for battery current measurement.

Related Products