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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 28 Apr 2011 (Thursday) 07:56
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Power solutions for 430EX II ?

 
dmward
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Apr 28, 2011 12:37 |  #16

Rob Galbraith talked about some batteries he uses in 430EXII to shorten recycle.
Anything that plugs into the battery compartment will extend the number of shots but not shorten the recycle time.

Only way to do that is to find a battery that delivers more voltage. That's what the external packs for the 580EX accomplish. Its very high voltage via a special connection.

The batteries are some new chemical technology. I tried some in a 580EX. They shortened recycle time but also were good for only about a third the number of images compared to more widely used technologies.


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m.shalaby
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Apr 28, 2011 12:40 as a reply to  @ dmward's post |  #17

^ So your saying no matter what battery I choose, I'm not going to speed up recycle times?




  
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HughR
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Apr 28, 2011 13:38 |  #18

I have used Panasonic Ni-MH rechargeable batteries in my 430EX for over a year and am completely satisfied with them. Recycle times are short and constant throughout almost the entire battery life. Also, they do not have a memory, so it is not necessary to shoot until they stop before recharging. I imagine some other Ni-MH batteries from other manufacturers do very well also, but I haven't checked them out. Here's a short quote from Panasonic's Ni-MH site:

"Ni-MH battery technology was developed to meet the increasing power demands of today’s portable devices.
Panasonic Ni-MH batteries offer more capacity compared to the same size Nickel Cadmium batteries. Due to their increased capacity and high energy density, users can expect a much longer running time per charge, reducing the need to constantly recharge the battery. Ni-MH features a consistent, stable power supply throughout each cycle so you’ll experience full power to the very end of every cycle."


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dbdors
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Apr 28, 2011 13:54 |  #19

m.shalaby wrote in post #12310398 (external link)
^ Right now, I'm going to have to stick with my 430EXII for a little while...

Please bear with me because this whole mAH thing is new to me.

So we have:

Powerex 2700 mAH
Imedion 2400 mAH
Eneloop 2000 mAH

What are the basic differences in terms of recycle time? None?
And its all about shelf life?

Sorry, this is all very new to me. I always just purchased alkalines :o

I'm no expert on Recycle, all I know is I like the low discharge, recycle time and battery life I get with the Imedions.

I have started to looking at the NiZn's lately. The NiZn seem to be the next rage in fast recycle. My only concern is the voltage is higer than 1.5 volts (I think the review measured 1.85V): http://strobist.blogsp​ot.com …offer-lightning-fast.html (external link)

I counted 13 pops before that thing overheated.!!!!


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m.shalaby
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Apr 28, 2011 13:58 |  #20

dbdors wrote in post #12310882 (external link)
I'm no expert on Recycle, all I know is I like the low discharge, recycle time and battery life I get with the Imedions.

I have started to looking at the NiZn's lately. The NiZn seem to be the next rage in fast recycle. My only concern is the voltage is higer than 1.5 volts (I think the review measured 1.85V): http://strobist.blogsp​ot.com …offer-lightning-fast.html (external link)

would you feel comfortable leaving the 2400's in your flash all week long without charge, and then go out on a 4 hour shoot? or do you think you would charge them the night before just in case?

i'm kinda stuck betweent the 2700's and 2400's....




  
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dbdors
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Apr 28, 2011 14:08 |  #21

m.shalaby wrote in post #12310905 (external link)
would you feel comfortable leaving the 2400's in your flash all week long without charge, and then go out on a 4 hour shoot? or do you think you would charge them the night before just in case?

i'm kinda stuck betweent the 2700's and 2400's....

Not if I knew I was doing a 4 hour shoot. I would charge them the night before. But in that case, I have 16 Imedion AA's and a CP-E (old 6 cell version).


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tolyD
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Apr 28, 2011 14:28 |  #22

I have 3 sets of eneloops for my 580s and love them. They seem to less after charge forever and flash recharge is way faster then regular batteries. I got mine at Costco for a great deal. Check b&h for their customer review.


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m.shalaby
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Apr 28, 2011 14:37 as a reply to  @ tolyD's post |  #23

Thanks for all the input guys.

I went with a 16pk of Imedions 2400's




  
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Andrew_WOT
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Apr 28, 2011 18:44 |  #24

Rob Gabriath here
http://www.robgalbrait​h.com …p?cid=7-10050-10598-10599 (external link)
mentions PowerGenix NiZn as the fastest recycle speed batteries, 1.1 sec for 430 EXII, twice faster than Eneloop.




  
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m.shalaby
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Apr 29, 2011 09:41 |  #25

dbdors wrote in post #12310315 (external link)
The Imedions are LSD like Eneloops, but at 2400 Mah vs. 2000 for Eneloops. The LSD will be 1.2 volts with low internal resistance and provide quick recycle.

Just thinking about this... mah's are 1.2volts while Alkalines, along with these new niZn are 1.6v. http://www.thomasdistr​ibuting.com …ble-Batteries_p_2017.html (external link)

The 'claim' is the 1.6v yields faster recycle times.

so are we taking a hit on recycle times by using Mah batteries ?




  
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rhys216
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Apr 29, 2011 09:49 |  #26
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^^^
Using Nizn batteries in a 430exii is similar to using a high voltage pack on the 580exii in terms of recycle time, in fact the 430exii probably recycles even faster at full power than a 580exii with battery pack on full power.




  
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m.shalaby
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Apr 29, 2011 09:52 |  #27

rhys216 wrote in post #12316045 (external link)
^^^
Using Nizn batteries in a 430exii is similar to using a high voltage pack on the 580exii in terms of recycle time, in fact the 430exii probably recycles even faster at full power than a 580exii with battery pack on full power.

Thats what I've read at the strobist.com.... but my point is they are 1.6v. so are regular ol' Alkalines! lol.... so really, using these MAH batteries, were taking a step back in recycle times... no?




  
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rhys216
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Apr 29, 2011 10:06 |  #28
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^^^
No, you can't just go by voltage, Alkalines have higher voltage, but NiMH can deliver more current faster, so some high Mah NiMH should deliver better recycle times than alkaline. NiZN on the other hand, has the best of both worlds, but they self discharge even faster than NiMH.

Edit:
Uh, I may be confusing Alkaline with Nicd, I'l have to look into it.

Edit 2:
Looked into it, check out the below link, looks like eneloops or equivalent, outperform Alkaline...
http://www.shooting43.​com/articles/FL36R/rec​ycle-times (external link)




  
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AlanU
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Apr 29, 2011 10:14 |  #29

If Low self discharge batteries are 2400mah thats a great option.

I have energizer 2450mah and they work. I just charge them before a shoot. Also use Rayovac hybrid, Imedion 2000mah and sanyo eneloops. In most cases I never use alot of the extra batteries I bring along to a shoot. Recycle time to me isn't a priority for me because I dont rattle off consecutively in portraits.


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dbdors
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Apr 29, 2011 10:23 |  #30

rhys216 wrote in post #12316151 (external link)
^^^
No, you can't just go by voltage, Alkalines have higher voltage, but NiMH can deliver more current faster, so some high Mah NiMH should deliver better recycle times than alkaline. NiZN on the other hand, has the best of both worlds, but they self discharge even faster than NiMH.

Edit:
Uh, I may be confusing Alkaline with Nicd, I'l have to look into it.

I think you have it right.

Again, I am not battery or electronics expert, I'm only going by what I've and understood from looking at the numbers.

Voltage = IR. I = Current and R = Internal resistance.

NiMH, NiCd both have low R and thus have a higher current. Even though the voltage is lower, they have a higher current and thus the faster recycle. As I understand the NiMH have even lower R (thus the low self discharge), which would mean a bit higher current.

The NiZn, must have an even lower R as it would appear that they have a high voltage and even higher current (I).

The alkalines have high voltage, but higher resistance and thus lower current, and slowest recycle time.

Maybe somebody who knows how this really works can clean this up for me :lol:


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Power solutions for 430EX II ?
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