c123 boot wihtout battery

246tnt at gmail.com 246tnt at gmail.com
Sun Mar 13 14:38:07 CET 2011


> I would like to run the c123(s) without the LI battery with direct
> 5V power supply only. Without battery the c123 display just blinks
> and no PROMPT1 can be received.

That won't work via the power plug ... (at least with osmocom, with the  
default FW it may works if you have a big cap instead of the battery).

You can inject 3.7v directly at the battery pins with a big cap close to  
the phone and that should work fine.

Check the C118 schematics to understand why.


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