I stopped using alkaline any time I have a choice several years ago. In the vast majority of devices, Eneloop NiMH cells provide superior performance without any danger of leaking. In the rare device for which they do not work well (two out of several dozen in my household), Energizer Ultimate Lithium works well.
Although the initial costs of cells and chargers is high, NiMH will save a lot of money in the long term. It is also nice not to have any reason to ever have less than an 80% charge. Two members of my household have 4xAA lights on their bikes, and being able to charge and replace after every night ride is nice.
Furthermore, around the time I started switching, I lost multiple Maglights to peaking alkaline batteries. The cost of ruined devices must also be considered.
If I am traveling, need de batteries now, and can only quickly and easily get alkalines, the. It is nice to have that option, but that is the limit of their usefulness to me.
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