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Changes for page FAQ for Batteries

Last modified by kai on 2025/05/21 18:04
From version 26.1
edited by Edwin Chen
on 2024/10/11 12:38
Change comment: There is no comment for this version
To version 32.2
edited by kai
on 2025/05/21 18:02
Change comment: There is no comment for this version

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1 -XWiki.Edwin
1 +XWiki.kai
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116 116  == 3.3 Solar Spec ==
117 117  
118 118  
119 +* Solar Panel: Monocrystalline Silicon
119 119  * Dimension: 103 x 73 mm
120 120  * Max Power: 0.9 W
121 121  * Voltage at nominal power :5V (±5%)
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123 123  * Cell efficient : 22%
124 124  * UV resistance
125 125  
126 -
127 127  == 3.4 Related Document ==
128 128  
129 129  
130 130  * **[[Recharge Circuit. >>https://www.dropbox.com/scl/fo/p9iqzcmivaczpmhwufj6s/h?rlkey=9zq6irrzj46ajy933ghg5uw3m&dl=0]]**
131 131  
132 -
133 133  == 3.5 Recharge without Solar ==
134 134  
135 135  
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173 173  The power consumption mainly include three parts:
174 174  
175 175  * 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)
176 -* Watch Dog Current: Internal Water Dog to monitor Software state: this is very small and same for each device.** for one day**: 0.003mAH
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
177 177  * Sampling Power: The power consume to read sensor for each sampling.
178 178  ** 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
179 179  * 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
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180 180  ** EU868 band, TXP=0 (Max Power), DR=5 （Shortest Distance） : ~~0.0028mAh (base on 3.3v) (per transmit + receive).
181 181  ** EU868 band, TXP=0 (Max Power), DR=0 （Longest Distance） :  ~~0.044 mAh (base on 3.3v) (per transmit + receive).
182 182  
183 -
184 184  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
185 185  
186 186  The total power consumption is
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198 198  )))
199 199  
200 200  
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 +=== 4.3.4 For LS version: ===
256 +
257 +
258 +Take WSC3-L as an example:
259 +
260 +[[image:image-20250521180239-1.png||height="348" width="675"]]
261 +
262 +
263 +
264 +
265 +
201 201  = 5. Debug for Battery running out shortly =
202 202  
203 203  
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