1 of 1 people found the following review helpful
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This review is from: Uniross 4 x AA 2700mAh Performance Batteries (Accessory)
As their name suggests, these batteries give great performance. I normally use Uniross Ultra Rechargeable (the newer Hybrios), but I bought the Performance to try out because they have a higher capacity (2700mAh as opposed to 2100mAh) which essentially means they will last longer.
I use the batteries in Canon 580EX II and 430EX II Speedlites, so they are put under heavy strain. Using Uniross Performance I get exactly the same output flash as I do with Uniross Hybrios. The advantage is that these batteries will last about 25% longer than the Hybrios, which could be a difference of hundreds of frames. I find that at 1/16 power or less both Hybrios and Performance can keep flashing for 8 frames a second without faltering.
A great buy and I will be purchasing more!