Flashlight Batteries that leak/corrode?

[cqaigy2]

Now that i think about it, im thinking there is a corrosion problem not some much caused by leakage of the batteries but probably because of moisture along with voltage.

 

[Soundguy]

Before we were using rechargeables, in my job in commercial audio, we used pro cells for years ( industrial duracel ), but switched to rayovac pro. ( again, pro version, not consumer grade ), as long a life, 20% cheaper.