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Title

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1		-FAQ for Batteries
	1	+How to calculate the battery life of Dragino sensors?

Author

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1		-XWiki.Edwin
	1	+XWiki.Xiaoling

Content

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1		-= ER26500 + SPC1520 Battery Pack =
	1	+=== **Battery Calculator Guide for Dragino Product.** ===
2	2
3		-== 1.1 Battery Info ==
4	4
5		-[[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.
	4	+Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which are 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.
6	6
7		-== 1.2 Battery Document ==
8	8
9		-The battery related documents as below:
	7	+**Instruction to use as below:**
10	10
11		-* [[Battery Dimension>>url:https://www.dropbox.com/s/ox5g9njwjle7aw3/LSN50-Battery-Dimension.pdf?dl=0]],
12		-* [[Lithium-Thionyl Chloride Battery datasheet, Tech Spec>>url:https://www.dropbox.com/sh/d4oyfnp8o94180o/AABQewCNSh5GPeQH86UxRgQQa?dl=0]]
13		-* [[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]]
14		-* [[Battery Report & Certificate>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]]
15	15
16		-Connector Type:
	10	+(% style="color:blue" %)**Step 1: **(%%)Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
17	17
18		-[[image:image-20230131145708-3.png]]
	12	+[[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
19	19
20		-== 1.3 When and how to Replace Battery ==
21	21
22		-The discharge curve of ER26500 is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
	15	+(% style="color:blue" %)**Step 2:** (%%)Open it and choose
23	23
24		-[[image:1675146710956-626.png]]
25		-
26		-If we see the battery lower than 2.7v, it is time to replace battery.
27		-
28		-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.
29		-
30		-Make sure the positive and negative pins match.
31		-
32		-== 1.4 Other Notice ==
33		-
34		-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.
35		-
36		-== Power Consumption Analyze ==
37		-
38		-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.
39		-
40		-Instruction to use as below:
41		-
42		-**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]]
43		-
44		-**Step 2:** Open it and choose
45		-
46	46	* Product Model
47	47	* Uplink Interval
48	48	* Working Mode
49	49
50	50	And the Life expectation in difference case will be shown on the right.
	22	+
	23	+
	24	+[[image:1666072082206-759.png]]
	25	+