Power options: PAG batteries?

[Piotr Wozniacki]

Has anyone tried feeding the EX1 through DC-in from a PAG battery (through PAGlock)? A special cable (PP90 to Sony Dc-in) is needed, which I'm planning to make myself - but would like to know beforehand there are no problems with the PAG batteries real max voltage vs the EX1's protection circuitry, etc.

Any input much appreciated!

[Bob Grant]

Many of us have been running the EX1 from the Sony Li-Ion brick batteries. Unless the PAGs are something very odd no reason they shouldn't work just as well. If you want to save money I can recommend the Comer batteries. These can be had with a D Tap built into the battery which makes it easier to power a light as well as the camera from them.

[John Peterson]

BP-U60 is 14.4v at 56 Wh
http://www.sonybiz.net/biz/view/Show...sPowerSupplies

This one is 14.8v at 186 Wh and should last more than twice as long (if you can adapt it) at roughly the same price as the BP-U60.

http://www.batteryspace.com/index.as...OD&ProdID=4164

John

[Piotr Wozniacki]

Thanks guys, I see your points - my own is, however, that I already own a couple of 100Wh PAG batteries (in addition to the PAGlock systems to be used either at my belt, or at the back of the PAG Orbitor shoulder support); the PAGlock has two power outputs (one feeding the PAG light, of course) - with the other being wasted so far...

[Bruce Rawlings]

I spoke to PAG back in February. They were in the process of sourcing the connector for the EX1. Have not heard anything yet, they are still working on it.

[Piotr Wozniacki]

Thanks Bruce - are you still in touch with them? Because if the only reason for not providing their customers with the right cable is the connector being difficult to get, with no other reasons for their batteries to not work properly with the EX1 DC-in - I guess I would be willing to cut the cable of my EX1 charger, fit it with XLR connectors, and use an XLR to PP90 adapter cable in order to plug it into my PAGlocks...

[Bruce Rawlings]

I will chase them next week. I offered to send them my charger cable but they wanted to do it properly and get a product that all could have easily.

[Piotr Wozniacki]

Sounds promising, Bruce - please keep us informed ('ll wait with cutting my charger's cable for now)....

[Bob Grant]

I have a packet of 50 plugs for the EX1, feel free to drop me a PM if you need any. These are the straight solder on variety. A right angle entry one would be nicer but they have to be molded onto the cable, that could be arranged too but only economic if I ordered over 500.
From memory the connector is "EIAJ 4" if you're trying to find one yourself locally.

[Alex Dolgin]

If our vDoubler can be acceptable for semi mobile use, it can power the cam for about 6-7 hours or so using Sony L or Panasonic batteries.

[Christopher Witz]

fyi...

the zylight z90 plug is the same as the ex1's.... so all the accessories power cords and supplies will work. ( and visa versa )

http://www.zylight.com/servlet/Categ...sories%3Apower

[John Peterson]

Originally Posted by Alex Dolgin

If our vDoubler can be acceptable for semi mobile use, it can power the cam for about 6-7 hours or so using Sony L or Panasonic batteries.

How?

If the four-hour Sony BP-U60 is a 56 Wh battery at 14.4 volts and the highest capacity "L" battery Sony makes (NP-F970) is 47 Wh at 7.2 volts then the current draw of the camera will drain a pair of NP-F970s in "less" time than a single BP-U60 will it not? Hooking the batteries up in series does not increase the Wh capacity of the batteries as far as I know.

John

[Alex Dolgin]

Oh yes. When you connect 2 47Wh batteries, you get 94Wh total (which is 4Wh more than Dionic 90). Doing math, you get 6.7 hours run time (94Wh/14W =6.7h)
Regards

[John Peterson]

Originally Posted by Alex Dolgin

Oh yes. When you connect 2 47Wh batteries, you get 94Wh total (which is 4Wh more than Dionic 90). Doing math, you get 6.7 hours run time (94Wh/14W =6.7h)
Regards

I think I must be forgetting basic electricity. If one puts two batteries in series, the voltage doubles but the amperage does not.

http://wiki.answers.com/Q/What_is_th...able_batteries

"Actually, if you put two 1.5V 2850mAh batteries in SERIES, you will get a 3V and 2850mAh battery. The voltage doubles but the current capacity does not. If you were to put the two batteries in PARALLEL, the voltage would remain 1.5V but the current capacity would double to 5700mAh. "

John

[Alex Dolgin]

You are almost there... you are correct that the amp hours do not change, but it is 7800mah@7.2V for the largest Sony L battery. So connecting 2 of them together gets you a 7800mah@14.4V battery. The U60 is only 4000mah@14.4V. Using 2 Sony L batteries, a camera will run almost 2x long as on the U60.
HTH