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LSN50V2-D2x LoRaWAN Waterproof, Outdoor Temperature Sensor        18  /  23 
 
3.  Battery & how to replace   
3.1 Battery Type 
LSN50V2-D2X is equipped with a 8500mAH ER26500 Li-SOCI2 battery. The battery is 
un-rechargeable battery with low discharge rate targeting for 8~10 years use. This type of battery 
is commonly used in IoT target for long-term running, such as water meter.   
 
The discharge curve is not linear so can’t simply use percentage to show the battery level. Below 
is the battery performance.   
 
 
Minimum Working Voltage for the LSN50V2-D2X: 
LSN50V2-D2X:    2.45v ~ 3.6v 
 
3.2 Replace Battery 
Any battery with range 2.45 ~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.   
And make sure the positive and negative pins match.   
 
 
3.3 Power Consumption Analyze 
 
Dragino Battery powered product are all runs in Low Power mode. We have an update battery 
calculator which base on the measurement of the real device. User can use this calculator to 
check the battery life and calculate the battery life if want to use different transmit interval.