Home ? Case Studies ? Battery solutions for smart metering in cold environments - Vega-Absolute case study
Li-SOCl2 primary lithium battery technology, a right as rain solution delivering high and stable operating voltage under any temperature
Saft batteries are the perfect fit for Russian market as they can sustain very harsh conditions meeting the most stringent requirements for reliability, quality, safety and power. All this, encouraging local content while using qualified Russian lithium.Valery Krasnikov CEO at Vega-Absolute
Russian weather can be unpredictable. Depending on the season and the location, temperatures can vary from -70°C to 40°C.
For Vega-Absolute, who specializes in smart utility metering systems for the Russian market, it was a real challenge to find the right battery solution for their range of smart meters.
With 24 years of experience and more than 700 000 devices produced every year, Vega-Absolute is a key player in Russia’s IoT market. Their electronic water meters, pulse counters, gas meters and modems are deployed across several of the principal Russian cities. All of their connected devices are using the low power consuming LoRaWAN® communication protocol. A high and stable operating voltage was required, therefore placing high expectations on the battery.
Not any battery or battery chemistry can withstand such a wide range of temperature and sustain high voltage over a long period of time.
The temperature has a strong impact on electrochemical efficiency: a low temperature protects the battery from self-discharge, ensuring a longer operating lifetime but can create low voltage readings; high temperatures promote passivation which protects the battery from self-discharging but can cause voltage delays. For a metering application that has to deliver reliable information over the course of its – longest possible – life, the choice of battery was more than a mere technical decision. It could influence the whole efficiency of the devices and have a massive impact on the cost of ownership if the devices had to be replaced frequently.
Our application Engineers analyzed the devices’ operational profiles and recommended a technology that has gained its spurs for metering applications: a Lithium-Thionyl chloride (Li-SOCl2) chemistry with a bobbin construction: the LS batteries. Choosing our batteries allowed Vega-Absolute to ensure a 5 year guarantee on their metering devices, a real competitive advantage for them.