Wiki source code of FAQ for Batteries

Last modified by kai on 2025/03/24 10:10

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7.2	1	(% class="wikigeneratedid" %)
	2	Table of Contents:
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	4	{{toc/}}
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7.1	9	= 1. ER26500 + SPC1520 Battery Pack =
3.2	10
6.1	11	== 1.1 Battery Info ==
3.2	12
7.2	13
6.1	14	[[ER26500 + SPC1520 battery pack>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]] is un-rechargeable Li-SOCl2 battery with 8500mAh 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.
3.2	15
7.2	16
6.1	17	== 1.2 Battery Document ==
3.2	18
	19
7.3	20	(% style="color:blue" %)The battery related documents as below:
7.2	21
7.3	22	* [[Battery Dimension>>url:https://www.dropbox.com/s/ox5g9njwjle7aw3/LSN50-Battery-Dimension.pdf?dl=0]]
	23
6.1	24	* [[Lithium-Thionyl Chloride Battery datasheet, Tech Spec>>url:https://www.dropbox.com/sh/d4oyfnp8o94180o/AABQewCNSh5GPeQH86UxRgQQa?dl=0]]
7.3	25
6.1	26	* [[Lithium-ion Battery-Capacitor datasheet>>url:https://www.dropbox.com/s/791gjes2lcbfi1p/SPC_1520_datasheet.jpg?dl=0]], [[Tech Spec>>url:https://www.dropbox.com/s/4pkepr9qqqvtzf2/SPC1520%20Technical%20Specification20171123.pdf?dl=0]]
7.3	27
6.1	28	* [[Battery Report & Certificate>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]]
3.2	29
7.3	30	(% style="color:blue" %)Connector Type:
3.2	31
7.1	32	[[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/image-20230131145708-3.png?rev=1.1\|\|alt="image-20230131145708-3.png"]]
3.2	33
7.1	34
6.1	35	== 1.3 When and how to Replace Battery ==
3.2	36
	37
7.2	38	The discharge curve of ER26500 is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
	39
7.1	40	[[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/1675146710956-626.png?rev=1.1\|\|alt="1675146710956-626.png"]]
6.1	41
7.2	42
6.1	43	If we see the battery lower than 2.7v, it is time to replace battery.
	44
	45	Any battery with range 2.7 ~~ 3.6v can be a replacement. We recommend using Li-SOCl2 Battery. It is suggest to add SPC1520 super capacitor with the ER26500 battery,The SPC can enlarge the battery life for high frequency use (update period below 5 minutes). If user can't find such capacitor, he can take out from old battery and add to ER26500 one.
	46
	47	Make sure the positive and negative pins match.
	48
7.1	49
6.1	50	== 1.4 Other Notice ==
	51
14.1	52	=== 1.4.1 Can i use send uplink in short period? ===
7.2	53
23.2	54
14.1	55	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 or NB-IoT, then the battery life may be decreased.
6.1	56
7.1	57
25.1	58	=== 1.4.2 Can i replace battery without SPC1520? ===
14.1	59
23.2	60
15.1	61	User can replace the battery with ER26500 without SPC1520, This will work. But will have reduced performance for example
14.1	62
	63	1) Shorter Battery Life.
	64
	65	2) Not enough to provide enough current burst in low temperature.
	66
	67
9.1	68	= 2. CR17450 Battery =
	69
	70	== 2.1 Battery Info ==
	71
	72
	73	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.
	74
	75
	76	== 2.2 Battery Document ==
	77
9.2	78
9.1	79	[[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"]]
	80
	81	(% style="color:blue" %)The battery related documents as below:
	82
	83	* [[Battery Dimension>>https://www.dropbox.com/sh/o3k9x20fv2osi3w/AAAGf2B7HcRGog8xAOPoMWPha?dl=0]]
	84
	85	== 2.3 When and how to Replace Battery ==
	86
	87
	88	The discharge curve of CR17450 is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
	89
	90	[[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"]]
	91
	92
	93	If we see the battery lower than 2.7v, it is time to replace battery.
	94
	95	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.
	96
	97	[[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"]]
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	99
25.1	100	= 3. Solar Panel + 3000mAh Li-ion battery =
6.1	101
18.1	102	== 3.1 Internal Structure ==
	103
23.2	104
17.1	105	Below are the Internal Power Structure for -LS and -NS version.
7.2	106
17.1	107	[[image:image-20231231200632-1.png\|\|height="479" width="933"]]
	108
	109
18.1	110	== 3.2 Battery Info ==
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23.2	112
25.1	113	The battery use in -LS and -NS version are 3.7v Li-ion rechargable battery . Dimension: 803450 x 2 , and 3000mAh capacity. The connector type is PH2.0 2 pin connector.
18.1	114
	115
24.1	116	== 3.3 Solar Spec ==
18.1	117
25.1	118
24.1	119	* Dimension: 103 x 73 mm
	120	* Max Power: 0.9 W
	121	* Voltage at nominal power :5V (±5%)
	122	* Current at nominal power: 180mA (±5%)
	123	* Cell efficient : 22%
	124	* UV resistance
	125
	126	== 3.4 Related Document ==
	127
25.1	128
17.1	129	* [[Recharge Circuit. >>https://www.dropbox.com/scl/fo/p9iqzcmivaczpmhwufj6s/h?rlkey=9zq6irrzj46ajy933ghg5uw3m&dl=0]]
	130
24.1	131	== 3.5 Recharge without Solar ==
23.2	132
17.1	133
20.1	134	If user wants to recharge the battery without Solar Panel. Below are the steps
	135
	136	a) Remove the 6v input from solar panel.
	137
	138	[[image:image-20240109233955-1.png\|\|height="234" width="593"]]
	139
23.2	140
23.1	141	b) Provide voltage to this connector(XHB2.54-2P) to recharge the battery. (Input Range: DC: 5~~12v)
20.1	142
23.1	143	[[image:image-20240110091157-1.png\|\|height="307" width="599"]]
20.1	144
23.1	145
17.1	146	= 4. Power Consumption Analyze =
	147
26.1	148	== 4.1 Method 1: Use Our Calculate Table ==
17.1	149
6.1	150	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.
	151
7.2	152	(% style="color:blue" %)Instruction to use as below:
6.1	153
7.2	154	(% style="color:#037691" %)Step 1:(%%) Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0>>https://www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0]]
6.1	155
7.2	156	(% style="color:#037691" %)Step 2:(%%) Open it and choose
6.1	157
3.2	158	* Product Model
	159	* Uplink Interval
	160	* Working Mode
	161
	162	And the Life expectation in difference case will be shown on the right.
7.1	163
	164	[[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"]]
7.2	165
11.1	166
26.1	167	== 4.2 Method 2: Manual Calcuation. ==
	168
	169	=== 4.2.1 For -LB / -LS LoRaWAN models base on ASR6601 ===
	170
	171	The power consumption mainly include three parts:
	172
	173	* Sleep Power : Most time the CPU are in sleep mode. It is around 6uA, So for one day, total power consumption: 6uA x 24(hour) = 144 uAh = 0.144mAh (base on batter output voltage)
27.1	174	* Watch Dog Current: Internal Water Dog to monitor Software state: this is very small and same for each device. for one day: 0.003mAH
26.1	175	* Sampling Power: The power consume to read sensor for each sampling.
	176	Example, SN50v3-LB connect to an external sensor, each reading need to use 5V , and sensor require current 10mA and 2 seconds. So each sampling need 10mA x 2 seconds / 3600 = 0.0056mAh ( base on 5v). Assume 90% converter rate from 3.3v to 5v) , we can consider the mAh in 3.3v is 0.0056mAh/90% = 0.0062mAh per sampling. If one day, SN50v3-LB read this sensor 3 times every hour. So for one day**, the total power consumption is 0.0062mAh x 3 x 24 = 0.4464 mAh
	177	* Transmit & Receive Power: this power consumption depends on the transmit power and the data rate (DR) settings. They are the same for all -LB and -LS series. Below are the reference
	178	** EU868 band, TXP=0 (Max Power), DR=5 （Shortest Distance） : ~~0.0028mAh (base on 3.3v) (per transmit + receive).
	179	** EU868 band, TXP=0 (Max Power), DR=0 （Longest Distance） : ~~0.044 mAh (base on 3.3v) (per transmit + receive).
	180
	181	So for SN50v3 with above sensor, we set 5V output to open 2 seconds every reading and set TDC = 20 minutes. So 72 reading and transmit every day
	182
	183	The total power consumption is
	184
	185	* EU868 , Good Signal : 0.144mAh + 0.003mAh + 0.0062mAh * 72 + 0.0028 mAh * 72 = 0.795 mAh per day. For the 8500mAh , if we consider 20% margin, we can use 8500mAh x 80% / 0.795mAh = 8553 days
	186	* EU868 , Poor Signal: 0.144mAh + 0.003mAh + 0.0062mAh * 72 + 0.044 mAh * 72 = 3.7614 mAh per day, For the 8500mAh, if we consider 20% margin, we can use 8500mAh x 80% / 3.7614 mAh = 1807 days
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	188	(((
	189
	190	)))
	191
	192	(% class="box warningmessage" %)
	193	(((
	194	Notice, actually deployment situation is more complicate and above calcualtion is base on lab. The calculation is only for reference. It doesn't response for the promising battery life.
	195	)))
	196
	197
27.1	198	== 4.3 Method 3: Use AI to calculate. ==
	199
28.1	200	=== 4.3.1 For CB version: ===
27.1	201
29.1	202	For example, if you need to inquire about the battery life of the S31-CB, you can refer to the following instructions to inquire about the AI:
27.1	203
29.1	204
	205	The S31x-CB using ER26500 + SPC1520 8500mAh battery packs.
	206
	207	~1. CB version of AI questioning techniques:
	208
	209	Battery capacity is 8500mAh, self-discharge <2%/year
	210	Sleep current: 19.618uA
	211	Sampling current&Duration: 20mA. 10 seconds
	212	UDP Transmit/Receive Current & Duration: 58mA, 36 sec.
	213	MQTT protocol transmit current & duration: 63mA, 41 seconds
	214	TCP protocol transmit current & duration: 62mA, 41 seconds
	215	GSP positioning current & duration: 87.0756mA, 44.162 seconds
	216	Timed Acquisition Current & Duration: 8.78151mA, 0.125338s
	217	Acquisition every 120 minutes, launching once, GPS positioning once a day ,15 minutes timed acquisition once
	218	How many years can the battery be used in different transmission modes?
	219
	220
	221	AI Response Results:
	222
	223	[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20250314084804-1.png?width=557&height=1828&rev=1.1\|\|alt="image-20250314084804-1.png"]]
	224
30.1	225	(% class="wikigeneratedid" %)
27.1	226
	227
30.1	228	=== 4.3.2. For CS version: ===
29.1	229
30.1	230
29.1	231	For example, if you need to inquire about the battery life of the S31-CS, you can refer to the following instructions to inquire about the AI:
	232
	233	The S31x-CS uses a 3000mAh Li-Ion battery.
	234
	235	Battery capacity is 8500mAh, self-discharge <2%/year
	236	Sleep current: 50.409uA
	237	Sampling current&Duration: 20mA. 10 seconds
	238	UDP Transmit/Receive Current & Duration: 58mA, 36 seconds.
	239	MQTT protocol transmit current & duration: 63mA, 41 seconds
	240	TCP protocol transmit current & duration: 62mA, 41 seconds
	241	GSP positioning current & duration: 87.0756mA, 44.162 seconds
	242	Timed Acquisition Current & Duration: 8.78151mA, 0.125338 seconds
	243	Acquisition every 120 minutes, launching once, GPS positioning once a day ,15 minutes timed acquisition once
	244	How many years can the battery be used in different transmission modes?
	245
	246	AI Response Results:
	247
	248	[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20250314093630-2.png?width=523&height=1621&rev=1.1\|\|alt="image-20250314093630-2.png"]]
	249
30.1	250	(% class="wikigeneratedid" %)
28.1	251
	252
30.1	253	=== 4.3.3. For LB version: ===
28.1	254
	255
30.1	256
	257
17.1	258	= 5. Debug for Battery running out shortly =
11.1	259
	260
	261	Below factors will affect the battery life. If the battery runs out very fast unexpectedly. Please check below points:
	262
12.1	263	1. Did you connect an external sensor? What is the power consumption of this sensor?
11.1	264	1. What is the (% style="color:blue" %)uplink period(%%) of the end node?
	265	1. What is the (% style="color:blue" %)DataRate(%%) the sensor used to uplink?
	266	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.
	267
12.1	268	User can also send us (support(at)dragino.com) record so check. a record like below with the info: Battery, uplink time, DR.
11.1	269
	270	[[image:image-20230418000422-1.png]]
23.2	271
	272

Wiki source code of FAQ for Batteries

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