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Warning GlobalMediaPro Li160A


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#1 Mark de Vries

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Posted 14 December 2010 - 06:06 AM

I recently purchased 5 Globalmediapro GMP Li160A batteries.
They where to replace my Phylion AN-2000A (=140A)

I was hoping with the 160A, I had a little more juice.
To my big surprise these batteries where not able to power my steadicam for more than 10 minutes!

I use a steadicam master, wireless thomson with LDK200, transvideo monitor and bartech focus assist. One phylion powered this for around 25 minutes.
My phylion batts kept on warning me (voltage warning in transvideo) upon the 11.7V point where the camera would stop.

The GMP's suddenly die at 12.6 V !!! No warning whatsoever.
They turned out to be completely unreliable.

Also I tried them on an Sony XDHD, same thing. The batts only lasted 5 minutes.
I was lucky to have some AB's from the rental companie as a backup.

Now, I have 5 useless batts.
I hoped to spend less, ended up paying way more!
Hopefully this will help others.


***********
GMP's response:
You use the battery incorrectly.
The maximum power draw for the battery is 79W.
You draw 23W for camera plus 58W for adapter plus 10W for monitor plus lens (?W)
You need at least 100W draw. Even then you come very close to the
limit of on-camera batteries available on the market.
So we recommend you use external power rather than on-camera battery.
For example, Globalmediapro Li422 Lithium ion Battery System 422WH, or
a similar Anton Bauer external power system.

It has nothing to do with Globalmediapro battery quality.
Please use our batteries according to their specifications.
*************

Note that the much smaller Phylions had no problem!!!
I don't see myself running around with a external power cable...
So Anton Bauer Dionic HC, her I come.

Regards,

Mark de Vries
Operator, Netherlands.

Edited by Mark de Vries, 14 December 2010 - 06:07 AM.

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#2 Tomas Riuka

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Posted 14 December 2010 - 06:12 AM

Globalmediapro is a bad choice, unfortunately :(
they are not reliable and i hear almost everyone has issues with them, not shipping items,
shipping wrong configurations etc. Suggest you stay away, cause you don't know what
you will get.

T.
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#3 James Puli

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Posted 14 December 2010 - 07:04 AM

Ive had a similar but opposite result with these batteries. (If that makes any sense)

The 160's ran my Boland 8.4 monitor for a day and a half on a recent job. The 95's ran a DigiBeta for 3+ hours on standby.

I have noticed that they do stop suddenly at 12ish volts as well, with very little warning. But for me, its always been after a signifigant amount of time so haven't worried about them. I just know to keep an eye on my voltage readout (my steadyrig base has a meter in it).

The other thing I have noticed is that the fuel gauge on the side of the battery doesn't often reflect the charge in the battery. If I turn the rig off, and take the batt off, the readout on the batteries will often be zero, but according to the voltage meter in my base, they still have 13-14v in them.

Though, this is without pushing them in the way Mark has been. Having a Pro style base that separates the power of components probably suits these batteries more then Marks applications.

So I just keep an eye on them, and they've been fine for me.

Edited by James Puli, 14 December 2010 - 07:07 AM.

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#4 Igor Petchorine

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Posted 27 December 2010 - 06:44 AM

Globalmediapro Li160A supports 79W power draw. It is sufficient for almost any modern camera and light. It is not sufficient for Mark's system which draws close to 100W. Our Li230A 230WH battery supports 100W draw.

We provide 1 year (2 years for orders over 20 pcs) battery warranty. As far as I understand Mark's batteries work fine if not overloaded.

Our batteries are protected from overloading. They should shut down if overloaded.

Power (W) and Energy (WH) are two different things. For a battery, Power is SPEED of drawing of the stored Energy. The Power limit (79W) is like a speed limit. You cannot ride it faster.

A battery may have less Energy but higher Power limit. Old cameras and lights used more Power. So older battery designs may offer higher Power limit. There are of course new high Power designs. The maximum Power limit on the market for an on-camera battery is 110W as far as I remember.

Steadicam applications often require higher Power. Please check that Power required for your system does not exceed the Power limit of the battery you plan to purchase.
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#5 Marco Dardari

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Posted 27 December 2010 - 12:56 PM

I agree completely with Igor!

Globalmediapro Li160A supports 79W power draw
Steadicam Power Cube support 120W power draw.
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Marco Dardari
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#6 Mark de Vries

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Posted 28 January 2011 - 02:30 PM

I have sold the batteries to a camera colleague.
He is very satisfied with them. He uses them on a XD cam and has no complaints.
So, do not use them the way I did, use them as intented.

Mark.
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#7 Mark de Vries

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Posted 17 May 2011 - 03:33 PM

UPDATE!

After buying Anton Bauer batteries Dionics HC, I've found out my steadicam is leaking power.
Thats why the Global Media Pro's were down so fast!
So, in the end there was nothing wrong with the batteries from GMP.

I'm very sorry for blaming the batts.
My colleague runs a few disks on one GMP battery and is very satisfied.

Having bought AB's, my sled is now a little lighter, but my wallet too...

Sorry guys at GMP, hope this makes it up a little.

Regards, Mark, Netherlands.
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#8 Thomas K. Jensen

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Posted 17 May 2011 - 03:56 PM

UPDATE!

After buying Anton Bauer batteries Dionics HC, I've found out my steadicam is leaking power.
Thats why the Global Media Pro's were down so fast!
So, in the end there was nothing wrong with the batteries from GMP.

I'm very sorry for blaming the batts.
My colleague runs a few disks on one GMP battery and is very satisfied.

Having bought AB's, my sled is now a little lighter, but my wallet too...

Sorry guys at GMP, hope this makes it up a little.

Regards, Mark, Netherlands.


I am running my rig on Global Media Pro Li160S (I've got 4 in total)
Two batteries can go for 5-7 hours with a Panasonic HPX2100, Bartech/M-One and Transvideo Titan HD.
And after 2 years of use - they are still working perfectly.

We also got 4x190W GMP for normal camera work, and they have worked perfectly for over 5 years now.
So I don't think there is any problems with them.
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