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LSN50 LoRa Sensor Node User Manual 35 / 55
2.8 Battery Analysis
2.8.1 Battery Type
The LSN50 battery is a combination of a 4000mAh Li/SOCI2 Battery and a Super Capacitor.
The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This
type of battery is commonly used in IoT devices such as water meter.
The battery is designed to last for more than 5 years for the LSN50.
The battery related documents as below:
● Battery Dimension,
● Lithium-Thionyl Chloride Battery datasheet, Tech Spec
● Lithium-ion Battery-Capacitor datasheet, Tech Spec
2.8.2 Power consumption Analyze
When connect to different sensors, it is good to test the power consumption with the sensor
working. User can remove the ON/OFF Jumper of LSN50, and connect a multimeter
between the two pins of this header and measure the current to know the whole system
power consumption. Because the sleep mode will have as low as 10uA, at least 4.5 digit
multimeter is required to measure this level of current.
A victor VC86E is recommended.
In a minimum system with DS18B20 and Oil Sensor and default firmware, the power
consumption includes:
1. Deep Sleep (Stop mode) for STM32. ~ 5uA
JST-XH-2P
connector