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:

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