Since these batteries are much more powerful than the Enelops, I prefer it actually for my photo-flash. With these batteries, the flash is much faster again ready for action and I can do a lot more with a flash. But the Selbstendladung is extreme. In a 3-week vacation I always bring a charger, since towards the end of the journey still unused batteries are empty by Selbstendladung that they can not even manage to charge the flash. With the Enelops that are much older, I do not have the problem.