Sorry if this is redundant, but I don't see the answer in some of the previous posts.
The Eneloop batteries are rated at 2000 mAh. I see others offered at 2700 mAh and a photographer recently told me 2900 mAh batteries are now available. What would be the advantages or disadvantes of each in relation to using them in a SB-800, SB-600 or in a D300? If you were planning on buying a new batch of batteries, what would you buy?
I am already in the habit of using freshly charged batteries on a daily shoot. Maybe 85% charge life after a year might be an asset, I don't see it being critical to me.
#1. "RE: Yet another batter question" In response to Reply # 0
The mAh rating on AA batteries is an expression of their capacity in milli-Ampere-hours (mAh). The greater the number, the more speedlight pulses you can achieve before recycle times get excessively long. In theory, a 2900 mAh battery can produce 1.0 milliamp of current for 2900 hours or 2.9 Amperes of current for one hour (2900/1000 = 1.0) and all possibilities between. All things being equal, this battery has 200 mAh additional power over the 2700 mAh offering ( A 7.4 percent increase). The amount of energy used by an SB800 pulse is a function of the power setting selected by the photographer.
Battery selection is a very subjective and personal preference issue with Nikonians. Issues include chargeable, versus non-rechargeable, alkaline versus NiMH versus Lithium, etc. Other factors include leak down rate for rechargeables (as high as three percent per day for some models), expected lifecycle, recycle rate in speedlights, relative cost, etc.
With twelve SB800s (two complete sets = 120 batteries), I use Lithiums exclusively as the prospect of maintaining enough chargers for my herd is more than I want to think about. Plus, the Lithiums have incredible shelf life which suits my often erratic shooting schedule. True, they do not exhibit the fastest recycle rate, but that is not an issue for me. I typically shoot one frame every several minutes, not several frames a minute.
Hope this helps sort it out for you.
HBB in Phoenix, Arizona
Photography is a journey with no conceivable destination
#2. "RE: Yet another batter question" In response to Reply # 0
Hi Mike, The advantage of the Eneloop batteries is that the will hold their charge(after battery is charhed and removed from the charger an placed in storage) for a much longer period of time than conventioal NMHi batteries. Typicam NMHi batteries loose as much as 3% of their charge per day even when just sitting on a shelf. If you shoot a often the conventioal batteries are probably better for your situation. For others the Eneloops are a better option. Good Luck. Best Regards, Marty