Changes for page FAQ for Batteries

Last modified by Mengting Qiu on 2025/04/22 11:28
<
From version < 13.1 >
edited by Edwin Chen
on 2023/10/04 19:35
To version < 31.1
edited by Mengting Qiu
on 2025/04/22 11:28
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1 -XWiki.Edwin
1 +XWiki.ting
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49 49  
50 50  == 1.4 Other Notice ==
51 51  
52 +=== 1.4.1 Can i use send uplink in short period? ===
52 52  
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 +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.
55 55  
57 +
58 +=== 1.4.2 Can i replace battery without SPC1520? ===
59 +
60 +
61 +User can replace the battery with ER26500 without SPC1520, This will work. But will have reduced performance for example
62 +
63 +1) Shorter Battery Life.
64 +
65 +2) Not enough to provide enough current burst in low temperature.
66 +
67 +
56 56  = 2. CR17450 Battery =
57 57  
58 58  == 2.1 Battery Info ==
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70 70  
71 71  * [[Battery Dimension>>https://www.dropbox.com/sh/o3k9x20fv2osi3w/AAAGf2B7HcRGog8xAOPoMWPha?dl=0]]
72 72  
73 -
74 74  == 2.3 When and how to Replace Battery ==
75 75  
76 76  
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86 86  [[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"]]
87 87  
88 88  
89 -= 3. Power Consumption Analyze =
100 += 3. Solar Panel + 3000mAh Li-ion battery =
90 90  
102 +== 3.1 Internal Structure ==
91 91  
104 +
105 +Below are the Internal Power Structure for -LS and -NS version.
106 +
107 +[[image:image-20231231200632-1.png||height="479" width="933"]]
108 +
109 +
110 +== 3.2 Battery Info ==
111 +
112 +
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.
114 +
115 +
116 +== 3.3 Solar Spec ==
117 +
118 +
119 +* Solar Panel: Monocrystalline Silicon
120 +* Dimension: 103 x 73 mm
121 +* Max Power: 0.9 W
122 +* Voltage at nominal power :5V (±5%)
123 +* Current at nominal power: 180mA (±5%)
124 +* Cell efficient : 22%
125 +* UV resistance
126 +
127 +== 3.4 Related Document ==
128 +
129 +
130 +* **[[Recharge Circuit. >>https://www.dropbox.com/scl/fo/p9iqzcmivaczpmhwufj6s/h?rlkey=9zq6irrzj46ajy933ghg5uw3m&dl=0]]**
131 +
132 +== 3.5 Recharge without Solar ==
133 +
134 +
135 +If user wants to recharge the battery without Solar Panel. Below are the steps
136 +
137 +a) Remove the 6v input from solar panel.
138 +
139 +[[image:image-20240109233955-1.png||height="234" width="593"]]
140 +
141 +
142 +b) Provide voltage to this connector(XHB2.54-2P) to recharge the battery. (Input Range: DC: 5~~12v)
143 +
144 +[[image:image-20240110091157-1.png||height="307" width="599"]]
145 +
146 +
147 += 4. Power Consumption Analyze =
148 +
149 +== 4.1 Method 1: Use Our Calculate Table ==
150 +
92 92  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.
93 93  
94 94  (% style="color:blue" %)**Instruction to use as below:**
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106 106  [[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"]]
107 107  
108 108  
109 -= 4. Debug for Battery running out shortly =
168 +== 4.2 Method 2: Manual Calcuation. ==
110 110  
170 +=== 4.2.1 For -LB / -LS LoRaWAN models base on ASR6601 ===
111 111  
172 +The power consumption mainly include three parts:
173 +
174 +* 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)
175 +* Watch Dog Current: Internal Water Dog to monitor Software state: this is very small and same for each device.** for one day**: 0.003mAH
176 +* Sampling Power: The power consume to read sensor for each sampling.
177 +** 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
178 +* 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
179 +** EU868 band, TXP=0 (Max Power), DR=5 （Shortest Distance） : ~~0.0028mAh (base on 3.3v) (per transmit + receive).
180 +** EU868 band, TXP=0 (Max Power), DR=0 （Longest Distance） :  ~~0.044 mAh (base on 3.3v) (per transmit + receive).
181 +
182 +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
183 +
184 +The total power consumption is
185 +
186 +* 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
187 +* 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
188 +
189 +(((
190 +
191 +)))
192 +
193 +(% class="box warningmessage" %)
194 +(((
195 +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.
196 +)))
197 +
198 +
199 +== 4.3 Method 3: Use AI to calculate. ==
200 +
201 +=== 4.3.1 For CB version: ===
202 +
203 +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:
204 +
205 +
206 +The S31x-CB using ER26500 + SPC1520 8500mAh battery packs.
207 +
208 +~1. CB version of AI questioning techniques:
209 +
210 +Battery capacity is 8500mAh, self-discharge <2%/year
211 +Sleep current:  19.618uA
212 +Sampling current&Duration:  20mA. 10 seconds
213 +UDP Transmit/Receive Current & Duration:  58mA, 36 sec.
214 +MQTT protocol transmit current & duration:  63mA, 41 seconds
215 +TCP protocol transmit current & duration:  62mA, 41 seconds
216 +GSP positioning current & duration:  87.0756mA, 44.162 seconds
217 +Timed Acquisition Current & Duration:  8.78151mA, 0.125338s
218 +Acquisition every 120 minutes, launching once, GPS positioning once a day ,15 minutes timed acquisition once
219 +How many years can the battery be used in different transmission modes?
220 +
221 +
222 +**AI Response Results:**
223 +
224 +[[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"]]
225 +
226 +
227 +
228 +=== 4.3.2. For CS version: ===
229 +
230 +
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 +
250 +
251 +
252 +=== 4.3.3. For LB version: ===
253 +
254 +
255 +
256 +
257 += 5. Debug for Battery running out shortly =
258 +
259 +
112 112  Below factors will affect the battery life. If the battery runs out very fast unexpectedly. Please check below points:
113 113  
114 114  1. Did you connect an external sensor? What is the power consumption of this sensor?
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119 119  User can also send us (support(at)dragino.com) record so check. a record like below with the info:** Battery**, **uplink time**, **DR**.
120 120  
121 121  [[image:image-20230418000422-1.png]]
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