I saw they sell the dummy AA battery pack that you can put in the flash unit to power with an external power source. What I don't know is how to close the battery compartment cover. Does anyone have any idea?
That could depend quite a bit on the details of the specific flash (and the adapter). It might be possible to find a spot where a small U-shaped notch on the edge of the battery door (or it's mating cutout) could permit wires to be routed out and make a connection. I admit to having low enthusiasm for attacking a recent model flash with my Dremel tool though!I saw they sell the dummy AA battery pack that you can put in the flash unit to power with an external power source. What I don't know is how to close the battery compartment cover. Does anyone have any idea?
That could depend quite a bit on the details of the specific flash (and the adapter). It might be possible to find a spot where a small U-shaped notch on the edge of the battery door (or it's mating cutout) could permit wires to be routed out and make a connection. I admit to having low enthusiasm for attacking a recent model flash with my Dremel tool though!
With current battery technology I don't see much reason for those battery pack. I had modified old Vivitar 283 to work with 7.4V Lithium Ion and the recycling time is just crazy. I just had to remember to give it a break after many full power flash to avoid overheating.
Does anyone have any idea?
I've run my Canon digital camera off of AC for quite some time. The AC adapter came with a replacement battery cover with a cable feed-through. You could fashion something similar; either drill a hole in an existing cover and do something creative with a grommet and/or some hot melt glue. Or maybe print (have printed) a new battery cover that feeds out the cable.
That could depend quite a bit on the details of the specific flash (and the adapter). It might be possible to find a spot where a small U-shaped notch on the edge of the battery door (or it's mating cutout) could permit wires to be routed out and make a connection. I admit to having low enthusiasm for attacking a recent model flash with my Dremel tool though!
With current battery technology I don't see much reason for those battery pack. I had modified old Vivitar 283 to work with 7.4V Lithium Ion and the recycling time is just crazy. I just had to remember to give it a break after many full power flash to avoid overheating.
Modification of the Vivitar with a overrated (voltage) lithium battery seems to me a a risky business for just powering a classic flash unit where a battery pack supplying the correct voltage current from a rechargable unit does not overstep the already good enough flash specs.
Just as very fast lenses are rarely (for most folks) needed, ultra fast flash units do not mean a better shoot with Model, nor will it improve a set of a fully set long table of china, stemware, silver and the lighting of.
Likewise, nature shoots, of wildlife, insects, flowers, or fish in a stream or a snail on a rock face are more about the correct moment to fire the flash, though some occasional rapid firing of a flash is needed, for dragonflies or birds, most of the shoot will be about regular or classic photography, not how quickly the flash resets.
IMO.
If the AC provide only the high voltage for charging the capacitor then you still need the batteries for it to work.
In the e36re, the AC trickles the battery, but there is enough current from the 'wall wart' to drive the voltage multiplier. So, it still needs a battery, even if the battery is dead. But the AC recycle time is actually slower than if the battery were fully charged.
Modification of the Vivitar with a overrated (voltage) lithium battery seems to me a a risky business for just powering a classic flash unit where a battery pack supplying the correct voltage current from a rechargable unit does not overstep the already good enough flash specs.
Just as very fast lenses are rarely (for most folks) needed, ultra fast flash units do not mean a better shoot with Model, nor will it improve a set of a fully set long table of china, stemware, silver and the lighting of.
Likewise, nature shoots, of wildlife, insects, flowers, or fish in a stream or a snail on a rock face are more about the correct moment to fire the flash, though some occasional rapid firing of a flash is needed, for dragonflies or birds, most of the shoot will be about regular or classic photography, not how quickly the flash resets.
IMO.
Not for me. It's cheap and gave the result that I wanted.
You said 7.4V li-ion battery what kind of cells do you use? 2 18650 cells?
No. It was a battery for Nikon D70 that I had lying around. I added mic port on the Vivitar to connect the battery. Later I did make a proper lithium battery pack to insert to Vivitar battery compartment but I misplaced the flash shortly after.
Oh thanks. I have some 18650 laying around. I think I will try 2 cells and see. Last night I power my Vivitar 283 with an external power supply set for 6V and current limit to 5A. It's quite fast. I would want to see how many A the Li-Ion can provide.
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