# Q2686 Li-ion Battery mangement

**URL:** <https://forum.sierrawireless.com/t/q2686-li-ion-battery-mangement/2738>\
**Category:** Legacy AirPrime modules\
**Created:** [December 12, 2008, 10:38am UTC](https://forum.sierrawireless.com/t/q2686-li-ion-battery-mangement/2738 "2008-12-12T10:38:35Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [March 1, 2010, 8:02am UTC](https://forum.sierrawireless.com/t/q2686-li-ion-battery-mangement/2738/21 "2010-03-01T08:02:52Z")

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> [@asish](#):
>
> If the module is power off condition and i put the charger on, module starts. Is it nomal?

What is the state of the ON/OFF pin?

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**Author:** ![looxonline](https://avatars.discourse-cdn.com/v4/letter/l/74df32/32.png) [@looxonline](https://forum.sierrawireless.com/u/looxonline)\
**Post date:** [March 4, 2010, 9:26am UTC](https://forum.sierrawireless.com/t/q2686-li-ion-battery-mangement/2738/22 "2010-03-04T09:26:29Z")

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> [@](#):
>
> asish wrote:  
> If the module is power off condition and i put the charger on, module starts. Is it nomal?

Check out PTS REV005, page 88, point number 5:

“Connecting a charger on the WMP100/WMP150/Open AT® Software Suite v2.0 has exactly the same effect than setting the ON/~OFF signal. In particular the WMP100/WMP150/Open AT® Software Suite v2.0 will not POWER-OFF after the AT+CPOF command, unless the Charger is disconnected.”

It does not really matter what state the ON/~OFF signal is at.

Hope this helps.

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**Author:** ![chethan](https://avatars.discourse-cdn.com/v4/letter/c/6bbea6/32.png) [@chethan](https://forum.sierrawireless.com/u/chethan)\
**Post date:** [July 27, 2010, 4:53am UTC](https://forum.sierrawireless.com/t/q2686-li-ion-battery-mangement/2738/23 "2010-07-27T04:53:51Z")

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Hi,  
I just went through the q2686 development kit user guide and the schematic . Now I need to design my own ckt. it consists of q2686 wavecom module and other ckt.

I need a battery enabled design so where i should connect the battery and charger…?  
since q2686 provides charging part I want to use that facility, hence I planned to connect li\_ion battery directly to the VBAT pin and charger to CHG\_IN pin .  
Will this works fine…? and what are the other things i need to consider to enable the charging…?

thanks  
chethan

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