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1		-XWiki.kai
	1	+XWiki.Xiaoling

Content

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82	82
83	83	* [[Battery Dimension>>https://www.dropbox.com/sh/o3k9x20fv2osi3w/AAAGf2B7HcRGog8xAOPoMWPha?dl=0]]
84	84
	85	+
85	85	== 2.3 When and how to Replace Battery ==
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87	87
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123	123	* Cell efficient : 22%
124	124	* UV resistance
125	125
	127	+
	128	+
126	126	== 3.4 Related Document ==
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128	128
129	129	* **[[Recharge Circuit. >>https://www.dropbox.com/scl/fo/p9iqzcmivaczpmhwufj6s/h?rlkey=9zq6irrzj46ajy933ghg5uw3m&dl=0]]**
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	135	+
131	131	== 3.5 Recharge without Solar ==
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145	145
146	146	= 4. Power Consumption Analyze =
147	147
148		-== 4.1 Method 1: Use Our Calculate Table ==
149	149
150	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.
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164	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"]]
165	165
166	166
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)
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
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
187		-
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		-
198		-== 4.3 Method 3: Use AI to calculate. ==
199		-
200		-=== 4.3.1 For CB version: ===
201		-
202		-
203		-===
204		-4.3.2. For CS version: ===
205		-
206		-
207		-===
208		-4.3.3. For LB version: ===
209		-
210		-
211		-
212		-
213	213	= 5. Debug for Battery running out shortly =
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