#2. "RE: Powergenix 1.6 NiZn Batteries AA" In response to Reply # 0
>What battery setting would you use with these batteries. >Alkaline or Lithium.
Which battery setting - camera or charger? They are Nickel-Zinc batteries, so a NiCAD or NiMH charger won't work. Neither will a Lithium Ion charger setting. You have to use a fast charger designed to output a charging voltage of 1.9v - a charger designed to accommodate Nickel-Zinc batteries in other words.
I think the camera should be set for Alkaline batteries in the grip, but check with Nikon first before using Nickel-Zinc AA batteries. The nominal output voltage of AA alkalines is 1.5v. The nominal output voltage of nickel-zinc AA batteries is 1.65v - close enough I'd say. But Nikon may not like that and may not be recommending use of nickel-zinc batts. Or Nikon might have detection logic built into the lithium ion setting (3.6v) to accommodate the lower nickel-zinc voltage. I haven't checked. I recommend calling Nikon tech support to be sure before using nickel-zinc batteries.
#4. "RE: Powergenix 1.6 NiZn Batteries AA" In response to Reply # 3
I called a nikon tech & he didn't even know about the NiZn batteries. I made a second call several days later & spoke with a female rep at least she had heard of them cause another nikon owner who was an engineer called her. To make a long story short since nikon does not have any knowledge of these batteries they did not recommend using them at this time. A member of another forum uses them in his flashes cause the recovery time of the flash is cut in half. He stated he also used them in his D11 grip on his D7000 and had no problem, but forgot which battery setting he used. Maybe after the batteries become more available nikon may be able to give an intelligent answer. Bill
#5. "RE: Powergenix 1.6 NiZn Batteries AA" In response to Reply # 4
Powder Springs, US
I would seriously give pause to using batteries that cut the cycle time in half. Rapid use could ruin a flash. That's one of the reasons why a Quantum Turbo pack can fry a speedlight when shooting rapidly. The flash needs time to cool down.
I'm curious now as to whether the thermal cut off controls in the SB-900 and SB-910 could keep up with the higher amperage. They would probably just shut the flashes down sooner.
Scott Chapin Powder Springs, GA, USA Nikonians Team Member