Energizer Ultimate Lithium AAA (L92)
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Official specifications:
Energizer%20Ultimate%20Lithium%20AAA-info

Due to the small size, these batteries are limited in current, but they are much better than alkaline.
Like other lithium cells the voltage is 1.8 to 1.9 volt when unloaded.

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Energizer%20Ultimate%20Lithium%20AAA-Capacity

Up to 1A the batteries works very well.

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Conclusion

Compared to alkaline this battery is very impressive, at least at higher current (Below a few mA load alkaline will probably match it). The long storage time and good performance in cold weather is also a advantage of lithium.



Notes and links

Cold weather performance is considerable worse than perforance at 25C, but it can deliver some power down to -40C.

How is the test done and how to read the charts
Comparison of AA battery chemistries