Table of Contents

Features

Highlights

System functionality

Data Real-time data History data Alarming Range Accuracy Resolution
Low High
Per Battery (cell) Voltage ✔ ✔ ✔ ✔ 2V battery…… 1.6 .. 2.6 V
12V battery…. 7.5 .. 15.6 V 		±0.2 % 0.001 V
Resistance ✔ ✔ ✔ 0.1 .. 50 mΩ ±(1.5 % + 25 μΩ) 0.001 mΩ
Temperature ✔ ✔ ✔ -20 .. +85 °C ±0.5 % 0.1 °C
SOC ✔ ✔ ✔ 0 .. 100 % 1 %
SOH ✔ ✔ ✔ 0 .. 100 % 1 %
Per string Voltage ✔ ✔ ✔ ✔ 20 .. 800 V ± 0.5 % 0.01 V
Current ✔ ✔ ✔ ✔ -1000 .. 1000 A ± 2 % 0.01 ADC
State ✔ floating charge,
equalizing charge,
discharge,
idle
SOC ✔ ✔ ✔ 0 .. 100 % 1 %
Balance ✔ ✔ 0 .. 100 % 0.01 %
Ambient temperature ✔ -40 .. +80 °C ± 0.5 °C 0.1 °C
Ambient hmidity ✔ 0 .. 100 % RH ±3 %RH 0.1 %RH
Hall sensor state ✔
Per UPS Voltage ✔ Average of string voltages
Current ✔ Sum of string currents
SOC ✔ Average of string SOC

System limitations

Device Functionality Limitations
BM-GW BTMS IOT Agregator Combines several BM-GW into one system Virtually unlimited number of BM-GW
BM-GW BTMS IOT Gateway Combines several BM-SS into UPS
WEB interface
Data collection and logging 		Up to 32 battery strings
Strings arranged arbitrarily in up to 32 UPS-es
BM-SS BTMS String master Combines several BM-CS into string Up to 120 batteries / string
BM-HS BTMS Hall sensor Measures string current One per string
BM-CS BTMS Cell sensor Measures battery One per battery
BM-MC BTMS Master controller Enables the connection of BM-LC, BM-TH and BM-HMI One per BM-GW
BM-LC BTMS IO expansion module Connection of auxiliary sensors (leakage, fire, ..)
Connection of auxiliary alarm devices (string disconnection, warning light, siren) 		Up to 32 IOs
(Up to 4 per BM-MC)
BM-TH BTMS Temperature and humidity sensor Ambient temperature and humidity measurement One per string
BM-HMI BTMS Human-Machine Interfaces Local inspection of data from UPS, strings and batteries One per BM-MC