Anyone ever try nickel-zinc batteries?

[texaspyro]

Here is a 2xAA Maglight modded with a Nichia 219 with alkaline cells. It is a direct drive light: All SOLD - 2AA Maglites "Flag Light" Nichia 219, Carlco TIR -

Here is the same light with PowerGenix NiZn cells:

All SOLD - 2AA Maglites "Flag Light" Nichia 219, Carlco TIR -

ALL SOLD For Sale ONE TWO new Flag Lights, 2AA Maglite with the US flag on them. They has been modified from an Incan, to a Nichia 219 high CRI led. They also have a Carlco 20mm plain, tight TIR optic. The heat sink is made the same way I have made my other recent 2AA Maglites. [1] [2] They come in the Presentation hard cases, with 2 Alkaline batteries. I will include a dummy AA battery, in case you want to use a 14500 in the light. Direct drive, Off or On. Just a slight twist of the body, …

NiZn cells don’t have the capacity of NiMH cells (beware they list their capacity in mWh, not mAh like all other batteries) so if the light uses a driver, they may not be much better. But they really spank a direct drive light.