View source for SB-SOM: Li-Poly Battery

== SB-SOM Battery support ==
[[Image:SB_SOM_topview2.jpg|thumb|right|alt=SB-SOM top view|<div align="center">SB-SOM top view</div>]]
[[Image:SB_SOM_bottomview2.jpg|thumb|right|alt=SB-SOM bottom view|<div align="center">SB-SOM bottom view</div>]]

SB-SOM battery support is implemented with the Texas instruments BQ24161 power-path and battery charger.
The battery should be connected to the system through the '''P19''' Battery connector.
Any battery complying with the requirements described in BQ24161 documentation can be used.

<blockquote>
=== System Power ===
The system-on-module at main power source connector '''P1''' (referred to as '''VSYS''' in SoM documentation and '''VCC_CM''' in SB-SOM schematics) is determined by available power sources as shown in the table below.

{| border="1" cellspacing="1" cellpadding="3" style="border-collapse:collapse"
|-
! DC power on connector J6 or J8
! Li-Poly Battery on connector P19
! VCC_CM / VSYS source
|-
| align=center| Connected
| align=center| N/A.
| align=center| SB-SOM BQ_INSRC rail
|-
| align=center| N/A.
| align=center| Connected
| align=center| Directly from Battery
|-
| align=center| Connected
| align=center| Connected
| align=center| Directly from Battery
|-
|}

{{note|When using a battery, the user must make sure that battery voltage is always within the recommended main ('''VSYS''' in most cases) voltage range of system-on-module.}}

=== Battery charging ===
SB-SOM is capable of charging the main battery whenever both the DC power source and Battery are present.
Battery charging process is autonomous and can be monitored by software through the BQ24161 I2C interface.
Please refer to SB-SOM schematics for additional details.<br>
LED '''DS1''' indicates battery charging is in progress.
</blockquote>

'''More Details:''' ''[[SB-SOM:_Connectors:_P19|Connector P19]]'', ''[[SB-SOM:_Connectors:_J6_and_J8|Connector J6]]'', ''[[SB-SOM:_Connectors:_J6_and_J8|Connector J8]]''<!--, ''[[SB-SOM: LEDS: DS1|LED DS1]]''-->.

== Tested Batteries ==
All evaluation kits with battery support are tested at Compulab with the following battery:
* Description: Lithium Ion Polymer battery, 97 x 55 mm, 10 W/h. with SB-SOM compatible connector.
* Specification: Battery datasheet is available for download [http://www.compulab.co.il/wp-content/uploads/2016/05/LP505597-battery-spec.pdf here].
* Purchasing: The battery is available for purchase directly from Compulab and is referred to as '''BAT10''' on the [http://www.compulab.co.il/support/cables-connectors-accessories/ Compulab accessories page]

[[Category:SB-SOM]]