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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	+
56	56	= Power Consumption Analyze =
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58	58
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72	72
73	73	[[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"]]
74	74
75		-
	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]]

image-20230418000422-1.png

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	1	+XWiki.Edwin

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