According the the "Keene Electronics Catalogue 2005" catalog the BP941H should fit the XM2.

Battery on GL2
 

I've got the large battery on my GL2,
charged it fully a few days ago but today it showed it was at 1/2 charge.. The unit has NOT been used and is in a controled enviroment and not subjected to cold or heat.
Is it normal for the camera to have a slight draw, even when shut down?

I think this is normal - although it seems quite a bit faster drop than I would expect. If I think of it I'll stick a fully charged battery on the GL2 and leave another fully charged battery alongside it for a week and see if there's much difference.

Generally there seems to be some "leakage" when batteries are mounted - they last longer when separated. Leakage rates vary according to charge state and battery technology.

Anton Bauer has a blurb on their web site that describes a bit about the decay rate for different technologies.

How old is the battery???

Batteries have a limited life span (a few years) and once they start going downhill they start losing their charge rapidly. A dead or shorted cell - which can happen to ANY battery - will also do this.

Rechargeables all self-drain to a certain extent. Nicads are the worst, but lithiums will slowly self-discharge too.

But it may be time for you to just buy another battery and dispose of that one...

I've got two of the large GL-2 batteries and sometimes leave them on the cam for a week with no battery level drop noticeable.

Sumpin ain't right with your battery. Disconnect the battery from the cam and let it sit for a couple days and see if it drops in capacity.

In addition to what has been said already:
I have used a BP-945 battery with my XM2 for 4 years now. Always leaving the battery on the camera. And I have never experienced any significant capacity- or charge drops the way you describe it, Randy.
A slight current draw from the battery when stored is normal and to be expected, but not half the charge in a few days or weeks.

Have you tried to attach the original battery to the camera to see if that one also lose much of it's charge in a few days? If so, it might be something wrong with the camera itself.

Same here, have not noticed any mentionable drain from the BP-945's I use on my GL, which are almost always mounted.

I have put one of our large batteries on the GL2 fully charged and it showed 1/2 right off. I flipped the camera over to Card for stills and it was full. Switched back and it was full on the vid selection. It has happened twice I believe since I have had teh camera. Maybe this will work for you.

Cheers.

I need a new 3-4 hour battery
 

I'll order online and don't want to get something which may well turn out to be more or less trash because I have never heard of that particular off brand (i.e. not offical Canon issue) before.

Need an BP-945 equivalent.

Any suggestions as to reliable sources/online e-tailers and "brands" that would qualify for a happy solution?

What do you personally use?

Thanks,
Bruce

I've had acceptable performance using LENMAR batteries. I;e used LIC941 (6000 mAhr rating) and LIC950 (5200 mAhr). But cannot state whether either would give 3-4 hours in a GL2. More important (to me) is getting to the point for a tape change.