Make Your DSLR Camera Run Four Times Longer with a DIY External Battery System

http://www.diyphotogra​phy.net …attery-run-4-times-longer

Though, I'm not sure if I can do this ..

Moin wrote in post #15581893
http://www.diyphotogra​phy.net …attery-run-4-times-longer

Though, I'm not sure if I can do this ..

interesting but doesn't look like the easiest DIY photo project

Moin wrote in post #15581893
http://www.diyphotogra​phy.net …attery-run-4-times-longer

Though, I'm not sure if I can do this ..

I know it's off thread, but it drives me crazy when people say 4 times longer when it's really 4 times as long.

I think I'd stick with the red wagon, my AC generator and an AC adapter. I've got to give the author an A+ for creativity with this one.

Turning wrote in post #15583159
I know it's off thread, but it drives me crazy when people say 4 times longer when it's really 4 times as long.

I don't see a difference.

4x longer technically = 500%
4x as long = 400%

tkbslc wrote in post #15583576
4x longer technically = 500%
4x as long = 400%

He is correct on this one.

I have thought of this as I was thinking of doing some time lapse over an extended period. My solution was a bit different though as instead of opening the OEM battery and going that route I chose to get a cheap grip off e-bay and simply wire the battery tray. I figured that I would never use the AA tray anyway so I did essentially the same thing using that. That way I can unscrew the grip (or replace the tray) and never need to take a chance of harming the camera.

Hillbille

ZXDrew wrote in post #15583790
He is correct on this one.

But I only pointed it out because someone asked. I generally don't make a point of correcting people unless precision is relevant.

Back to the topic at hand, I always found it easier to give my camera longer running time by just carrying some extra (no-name) batteries.

tkbslc wrote in post #15583920
But I only pointed it out because someone asked. I generally don't make a point of correcting people unless precision is relevant.

Back to the topic at hand, I always found it easier to give my camera longer running time by just carrying some extra (no-name) batteries.

In the case of time lapse you really do not want to disturb the camera changing batteries. Therefore it is far better to have an external power supply that can be changed or extended without disturbing the camera in order to maintain the exact line of shooting. Carrying extra batteries works for normal use but isn't always THE way to go in all uses.

Hillbille

Why not just buy the AC adapter? After you buy everything and take the time to put it all together Id just buy the adapter.

Mark1 wrote in post #15584326
Why not just buy the AC adapter? After you buy everything and take the time to put it all together Id just buy the adapter.

For me the entire project was not intended to use an AC adapter at all but was intended to use an external set of batteries which could be run in parallel via a double connector and thus allowing one (battery)to be replaced while another provided power. Larger capacity batteries allowed for extended shooting away from the normal "grid" and out where I wanted to be.

Hillbille

This seems like a fire waiting to happen. I especially dislike his attempt at mixing unbalanced cells in a battery circuit without including safety controls to ensure load balance, as this is a great way to fry stuff.

Personally I would rather modify an AC adaptor feed to run directly off a large capacity battery. You shouldn't need to go playing around with lithium cells and blades or soldiering irons.

I wouldn't mount that in my 5DII, never, ever