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Archive 2009 · Poor Starving Photographer's Quantum Turbo...
  
 
cyberstudio
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p.2 #1 · Poor Starving Photographer's Quantum Turbo...


400d wrote:
You can always mod a CP-E4 or whatever HV pack you found with NiMH/Li-Ion/LiFePO4 batteries. The cheapo Chinese CP-E4 (http://tinyurl.com/djrex8) is good for Li-Ion mod (2x3.7V). I <3 my Sunpak TR-2000 packs; mine are modified to use 4x18650 (7.4V 4000mAh), each pack weighs 1lb 3.6oz (560g). SLA and NiCD should be banned



I am thinking of doing the same thing and wonder how we go about making a protection circuit for the lithium battery - e.g. over-current, over-discharge protection. Any ideas?

Aug 04, 2009 at 09:40 PM
RL15
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p.2 #2 · Poor Starving Photographer's Quantum Turbo...


anyone try those aftermarket CP-E4 replicas from gadget infinity? does it work? i cant see it being that hard to replicate since its just batteries connected to wires....

Aug 04, 2009 at 10:14 PM
D Smith
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p.2 #3 · Poor Starving Photographer's Quantum Turbo...


Occasionally I shoot for ASI and we use the R/C battereis on Metz's and at a lower power, we shoot literally thousands of frames before they are depleted. Neat stuff.

Aug 04, 2009 at 10:14 PM
Scott Clark
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p.2 #4 · Poor Starving Photographer's Quantum Turbo...


You know what's funny...in the time that's passed since I posted this thread I've decided I'm happy with just a AA battery pack for on camera flash. For a speedlite (or two) on a stand I have a Dynalite Jackrabbit.

I did however buy a big (and kind of expensive) 10AH NIMH battery pack...I made an adapter to run my portable Norman lighting setup, and put together a *very* portable 400 watt second two light set. I've got two Norman 200b packs, two heads, and the power supply all in a shoulder bag that's easy to carry around. Because the packs are already 12V, I don't need an inverter . I also made an adapter that plugs into the AC adapter for my 1Ds, so if I ever needed *really* long battery life I have it.

Eventually I'm going to get a pure sine wave inverter to run studio lights on location with that battery...it would be smaller/lighter than a Vagabond, but the VBII uses a 20AH battery so I would get roughly half as many pops. I'm curious to see how many full power shots I can get with my WL X3200...probably not that many. It would be a lot more fun to pack around than a VB anyway. That battery only weighs 3 pounds...a 10AH lead acid battery weighs closer to 10 pounds .

Aug 04, 2009 at 10:48 PM
 



nikongirl
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p.2 #5 · Poor Starving Photographer's Quantum Turbo...


Hey Deb - I just bit the bullet and ordered some powerex rechargeables - here is the charger that I picked:
http://www.thomasdistributing.com/shop/maha-mhc800s-aa-aaa-battery-chargerbrdeluxe-8-cell-professional-battery-charger-w-full-lcd-displaybrwith-bag-and-two-8-cell-holders-p-424.html?SP_id=&osCsid=a98rm8a91donrsllit8gi3gna7

Aug 05, 2009 at 01:01 AM
cyberstudio
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p.2 #6 · Poor Starving Photographer's Quantum Turbo...


RL15 wrote:
anyone try those aftermarket CP-E4 replicas from gadget infinity? does it work? i cant see it being that hard to replicate since its just batteries connected to wires....


I have always wondered if it is a high voltage pack or a low voltage pack.

Aug 05, 2009 at 08:33 AM
Scott Clark
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p.2 #7 · Poor Starving Photographer's Quantum Turbo...


cyberstudio wrote:
RL15 wrote:
anyone try those aftermarket CP-E4 replicas from gadget infinity? does it work? i cant see it being that hard to replicate since its just batteries connected to wires....


I have always wondered if it is a high voltage pack or a low voltage pack.


It's HV. There was a discussion of these here just recently...

http://www.fredmiranda.com/forum/topic/792553

Aug 05, 2009 at 12:42 PM




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