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53	53	The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
54	54
55	55
56		-= 2. CR17450 Battery =
57		-
58		-== 2.1 Battery Info ==
59		-
60		-
61		-CR17450 is an un-rechargeable Li-MnO2 battery with 2400mAh and 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. Dragino outdoor sensor models use this type of battery widely.
62		-
63		-
64		-== 2.2 Battery Document ==
65		-
66		-
67		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220515075625-3.png?width=257&height=193&rev=1.1||alt="image-20220515075625-3.png" height="193" width="257"]]
68		-
69		-(% style="color:blue" %)**The battery related documents as below:**
70		-
71		-* [[Battery Dimension>>https://www.dropbox.com/sh/o3k9x20fv2osi3w/AAAGf2B7HcRGog8xAOPoMWPha?dl=0]]
72		-
73		-== 2.3 When and how to Replace Battery ==
74		-
75		-
76		-The discharge curve of CR17450 is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
77		-
78		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220515075034-1.png?width=644&height=208&rev=1.1||alt="image-20220515075034-1.png" height="208" width="644"]]
79		-
80		-
81		-If we see the battery lower than 2.7v, it is time to replace battery.
82		-
83		-CR17450 is a general type battery. User is easy to find online via Aliexpress, Amazon , Ebay etc. Below shows how to replace it in LHT65N, unscrew the screws and replace will be ok.
84		-
85		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220515075440-2.png?width=272&height=338&rev=1.1||alt="image-20220515075440-2.png" height="338" width="272"]]
86		-
87		-
88	88	= Power Consumption Analyze =
89	89
90	90
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104	104
105	105	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675146895108-304.png?rev=1.1||alt="1675146895108-304.png"]]
106	106
107		-
108		-
109		-= Debug for Battery running out shortly =
110		-
111		-Below factors will affect the battery life. If the battery runs out very fast unexpectedly. Please check below points:
112		-
113		-1. Did you connect an external sensor? What is the power consumption of this sensor?
114		-1. What is the (% style="color:blue" %)**uplink period**(%%) of the end node?
115		-1. What is the (% style="color:blue" %)**DataRate**(%%) the sensor used to uplink?
116		-1. Does the sensor sends re-transmit too oftern? See [[**this link**>>http://wiki.dragino.com/xwiki/bin/view/Main/Notes%20for%20ChirpStack/#H7.A0MultiplyUplinkinChirpStack]] for a possible issue with LoRaWAN server.
117		-
118		-User can also send us (support(at)dragino.com) record so check. a record like below with the info:** Battery**, **uplink time**, **DR**.
119		-
120		-[[image:image-20230418000422-1.png]]
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