on January 4, 2013
I uses these high mAh batteries to power my Nikon camera flash units, and find they are powerful and long lasting, and recharge quickly. While I've only been onto is particular model of battery for a couple years, they seem poised to last for a good long useful life.
on January 29, 2016
I test the mAH capacity of all batteries I buy in a capacity tester (Maha Powerex MH-C9000), and I'm happy to report that these batteries all exceed the stated capacity.
The battery charger has an option for a battery conditioning cycle that sometimes improves capacity on new batteries. These batteries are marked 2400mAH, but after conditioning all 16 batteries' capacity measured between 2620 and 2680 mAH, far above the stated 2400 mAH.
I was going to subtract one star for receiving 2400 mAH batteries when 2450 was advertised. But the capacity makes me happy, these are great batteries.