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Hi all,
I am thinking aloud here so any comments you have would be appreciated, especially from those that have done it or know a bit about the electrics in cameras...
I am contemplating using a Lithium Polymer battery the same as they use on RC Model Aircraft to power my Canon 400D. The Batteries that are used on my Canon are 7.4v, the AC adapter I have is also rated at 7.4v. The lithium Polymer Batteries I use in my RC aircraft are also 7.4v being 2cell LiPo I can get these reasonably cheap off the net, and I have the LiPo charger etc... The good thing about the RC batteries is instead of the usual 1200mAh per battery I can get a 5000mAh LiPo and run 4 times as long or more if I put these batteries in parrallel.
The idea I have is to use the existing AC adapter dummy battery thing, and the wire that comes from it, cut that into two and add a plug to it then I can plug the Battery straight into the Dummy Battery, or if I want to use the AC adapter, I just plug that into the dummy battery.
The idea came from this website: http://www.tellurian.ca/newastro/eosbatterypg.html I have tried getting in touch with the owner without success...
The only issue I may have is the full charge voltages of the LiPo compared to those standard batteries. Unless these is something else someone can think of...
Does this sound like it could be done? Has anyone attempted something like this? Am I crazy for thinking such a thing?
The idea of using the larger batteries is so I can do a full nights continuous shooting using the batteries, the Battery grip and two batteries I use still have to change them before the full session is over, which is a pain, and where I usually shoot AC power is not an option.
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