Flash Batteries

[Donde]

For some time I have used Powerex 2700 rechargeable batteries in my Canon flash with good results but I wonder if there are other batteries with even more capacity. I tried a set of Eneloops and while they worked well they didn't seem to have more capacity and they quit recharging after a year's use.

 

[AceCo55]

If you are not satisfied with AA batteries, have you considered a power pack?
GODOX PHOTO EQUIPMENT CO.,LTD Power Pack PB960

 

[KmH]

2700 mAh is about as good as it gets for AA batteries.
I too use the Powerex AA's instead of Eneloops.

 

[photo1x1.com]

I once made an extensive test with more than 8.000 flash ignitions to check which batteries work best for me. I do have rather long periods when I don´t use speedlights and then I don´t want to discharge/charge them before a shooting. So it is important for me that batteries don´t loose power when they are not used. One of the batteries in the test (the most expensive one!!!) lost more than 50% capacity in 30 days!!!
After that test I bought all eneloops because I felt they were the best value for money, see the result for yourself:
A short explanation:

1. I refreshed every single battery before I first used it (discharge/charge) then I checked the number of possible flash ignitions right after that first charge.
2. After they cooled down, I recharged them, put them into the cupboard and waited 15 days before I did my next test with the same batteries.
3. After they cooled down again, I again recharged them and waited 30 days this time. You can see the result below.

While some batteries have more power right after charging, they lose it pretty quick.
I don´t know if it helps.

Here´ a table with some details - I have more in case you are interested:

Battery	Price in EUR	capacity rating	Measured capacity after first charge
Ansmann maxE+	11,10	2500	2494,5
Ansmann Professional	14,26	2850	2829,25
Sanyo Eneloop	9,62	2000	1963,5
Sanyo Eneloop XX	14,10	2500	2618,75
Duracell Stay Charged	13,23	2000	1949,25
Duracell Supreme	9,64	2450	2463
Varta Power Akku	9,53	2700	2714
Varta Professional	12,32	2700	2692,75
Varta Stay Charged	9,00	2300	2361,75

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