ok guys,
i made this check:
1. i pull out the battery from the PCB, and check the voltage : 1.27 Vdc
2. now get it back (soldering it back) and also soldered 2 wires from the battery outside the device, s i can measure its voltage when it is connected to 220VAC.
(you can see it in the photos attached)
3. the Volt Meter show that the voltage raise up till 1.6 Vdc and than stopped.
even after 3 hours - in 1.6Vdc the voltage stopped raising up.
(not sure if it have somthing with the bad soldering all over the PCB - this is how it cames)
1.6V is not a voltage of a Zener Diode?
i guess two more things i can do is buying another battery or trying charge this battery outside with other charger...
any more suggestions ?
thanks,
itai.