Tried other batteries (Duracell, Energizer) including NiZn. These are the only AA batteries I've used in my flash (flash, flash) to date that don't run out in the middle of a photoshoot. Of course, if you're a pro, use an external power supply. However, when you disconnect from external power, you want to take a picture. You don't want to swear like a sailor in front of your customer. I'm not a professional photographer so I can't justify the cost of an external power supply, but I still wouldn't want to be without it. That's why I only use these Eneloop Pro AA batteries. General information: Eneloop Pro batteries (black) have a relatively high discharge rate. They are designed for use in electronic devices that draw a lot of current. Examples include flashlights (flashlights), cameras, amateur (amateur) and CB portable radios, and high-power flashlights. Conventional Eneloop batteries (white) have a slower discharge rate and a relatively low self-discharge rate. They are designed for use with electronic devices that consume little power and are not used at all intermittently or for long periods of time. Examples include small LED lights (flashlights), flash triggers (lightning flashes), wireless keyboards and mice, and Bluetooth speakers.
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