External battery for Bolex EBM (wiring...??)

ericyeong · January 11, 2008

Hi, hope you guys could help me to solve this... I'm trying to power up my EBM with external 12V battery instead of the hand grip battery, I salvaged the 7-pin plug from my burnt camera charger and tried to connect it to the 12v battery. When I opened the charger, it was marked -ve & +ve on wires and I connect them as per to battery. It ran but at higher frame rate ( was set on 25 fps)... sound like 50 fps?? I unplugged immediately, my camera still working as normal on the hand grip battery...

Question;

-does the wiring on the connector pin different between charger and power up cable?

-if yes, how is it suppose to be?

-the battery that i tried is Lithium-polymer type, 11.1V 2200mAh 20c, does this battery work on this camera?

Thanks,

Eric

Edited January 11, 2008 by ericyeong

Jean-Louis Seguin · January 11, 2008

Hi, hope you guys could help me to solve this... I'm trying to power up my EBM with external 12V battery instead of the hand grip battery, I salvaged the 7-pin plug from my burnt camera charger and tried to connect it to the 12v battery. When I opened the charger, it was marked -ve & +ve on wires and I connect them as per to battery. It ran but at higher frame rate ( was set on 25 fps)... sound like 50 fps?? I unplugged immediately, my camera still working as normal on the hand grip battery...

Question;

-does the wiring on the connector pin different between charger and power up cable?

-if yes, how is it suppose to be?

-the battery that i tried is Lithium-polymer type, 11.1V 2200mAh 20c, does this battery work on this camera?

Thanks,

Eric

Measure the voltage on the pins of the handgrip to camera plug.

I think it is pins 3 and 4 but I don't have my documentation in front of me to tell you which is pos and which is neg.

Duplicate the connections on your other 7-pin plug.

11.1V may a bit borderline to run the camera. The minimum voltage required is around 11 volts.

Cheers,

Jean-Louis