pantagana23
Newly Enlightened
I haven't tried lithium primaries in the SC5xx lights, but with somewhat old eneloop pros I rarely see more than 2 flashes from the battery check in the SC5c II and SC53c. Many of them also can't keep up with H1 on the SC5c II even when freshly-charged, as it's simply asking for a lot of current from the poor little batteries. (For this reason, I kinda think the SC53x lights just make a lot more sense even though the specs aren't as impressive as the SC5x II.)
That being said, I would be surprised if a fresh lithium AA couldn't achieve H1 for any length of time. And eneloop pros have higher self-discharge than regular eneloops, but they shouldn't die that fast.
To reply both, I have an SC5w II, and asked the manufacturer regarding Energizer lithiums. They stated that I would not be able to get max output, due to max current limit of Energizer (2.5A continuous, 4A burst). Thus why I don't use those, but Eneloop Pro instead.
I've had the light EPro go from 3 flashes to 1 flash within a day, without even using it. However, the batteries are freshly bought, and I haven't charged them. The ones that were charged seem to hold up when not used. This is a consuming little light when using it, drains EPros faster than I expected. However, this could be just my subjectivity.