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Remote temperature measurement of batteries in energy banks using LoRaWAN

2025-07-09

With the increasing use of renewable energy and battery-based energy storage, there is a need for reliable and remote monitoring of their condition. One of the key parameters affecting system safety and performance is the operating temperature of the cells.

Its uncontrolled rise can lead to a shortened battery life, damage and, in extreme cases, fires. In this context, LoRaWAN technology proves to be the perfect solution for implementing an intelligent and scalable measurement system.

Why LoRaWAN?

LoRaWAN is a wireless LPWAN (Low Power Wide Area Network) technology that provides high flexibility with low power consumption. For distributed installations such as photovoltaic farms or industrial energy banks, the advantages of LoRaWAN are particularly important:

  • Range of up to several kilometres - enables the entire farm to be covered by a single gateway.
  • Low power consumption - sensors can run for up to several years on a single battery.
  • Low infrastructure costs - no need to run cables or invest in cellular networks.
  • Flexibility of installation - ideal for existing sites, without interfering with infrastructure.

Example sensors for temperature monitoring

For monitoring system implementations in energy banks, it makes sense to go for proven LoRaWAN sensors that provide high measurement accuracy, reliable operation in industrial environments and long operating autonomy. Selected sensor models - such as the Milesight EM300-TH, EM500-PT100 and Adeunis TEMP and TEMP2S - are available off-the-shelf from JM elektronik's stock, allowing you to start your project quickly without waiting for deliveries.

Milesight EM300-TH

The most popular model for temperature measurement in battery banks:

  • Measuring range: -30°C to +70°C (accuracy ±0.3°C)
  • Additional humidity measurement - useful for corrosion risk detection
  • IP67 housing - resistant to dust, moisture and harsh weather conditions
  • Battery powered, up to 10 years of operation
  • Ideal for mounting on battery enclosures in PV farms and containerised energy stores

WYSIWYG - lorawan-pomiar-temp-famy-solarne_Milesight-EM300-TH.jpg

Milesight EM500-PT100

Industrial sensor dedicated to demanding applications:

  • Temperature measurement with high precision (up to ±0.1°C)
  • Range dependent on the probe used (e.g. up to +200°C)
  • IP67 housing, battery-powered
  • Used e.g. with inverters and in switchgear exposed to high temperatures

WYSIWYG - lorawan-pomiar-temp-famy-solarne_Milesight-EM500-PT100.jpg

Adeunis TEMP

Sensor with internal probe and one external probe for contact measurement:

  • Records ambient and surface temperature
  • Operation up to 15 years on battery
  • Periodic and event measurement mode (e.g. alert when threshold is exceeded)
  • Data logging, local and remote configuration

WYSIWYG - lorawan-pomiar-temp-famy-solarne_Adeunis-TEMP.jpg

Ideal for monitoring the temperature of the container interior and the battery itself simultaneously.

Adeunis TEMP2S

Model equipped with two external contact probes to measure temperature at two points simultaneously:

  • Measurement e.g. on two different batteries, or in two areas of the container
  • Autonomy of up to 15 years
  • Operating modes identical to the TEMP model
  • Industrial-strength housing for indoor and outdoor applications

WYSIWYG - lorawan-pomiar-temp-famy-solarne_Adeunis-TEMP2S.jpg

Technology alternatives - why does LoRaWAN win?

  1. Temperature sensors are installed directly on the battery housings, inside containers or at the inverters.
  2. Data transmission takes place over the LoRaWAN network to a gateway, which can be centrally located on the farm.
  3. The data goes to an IoT platform, e.g. The Things Stack, ThingsBoard, Ubidots, Milesight IoT Cloud, where it is visualised and the user can set alerts (e.g. SMS/e-mail when a temperature threshold is exceeded).

Technology alternatives - why is LoRaWAN winning?

Technology advantages disadvantages
NB-IoT / LTE-M Good building penetration, mobility Higher costs (subscription), higher power consumption
Zigbee / BT Low latency Short range, poor scalability
Modbus RTU Stability, reliability High cost of wired installation, limited flexibility


LoRaWAN combines key strengths: long range, energy efficiency and low deployment cost - making it an ideal choice for industrial monitoring.

What else is worth monitoring in energy banks?

The measurement system can easily be extended to include additional parameters:

  • Humidity - to prevent condensation and corrosion,
  • State of charge of cells (SOC), voltage - for efficiency monitoring,
  • Vibration and vibration - to detect mechanical damage or equipment failure.

Steps to implement the system

  1. Determine the number of critical measurement points (e.g. batteries, inverters).
  2. Plan the location of the LoRaWAN gateway - preferably centrally, with minimal obstructions.
  3. Use available tools for range planning and equipment deployment (range simulators, propagation maps).

A monitoring system based on LoRaWAN and sensors available from JM elektronik is a practical, scalable and cost-effective solution for temperature monitoring in energy banks. It provides security, increases efficiency and allows a rapid response to potential risks. With the increasing number of PV installations and the needs of the energy market, it is a technology that is already setting the standard in remote monitoring of energy infrastructure.

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