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Old stock - not a bargain
on April 25, 2011
The batteries I ordered were delivered promptly, and were exactly as pictured. That's all good, but...
I took one of the five out to measure voltage, to make sure it was fresh. The voltage measured 3.016 volts, which was barely better than the 2.995 volts I measured on the battery I was replacing. That battery had been in use for about a year and a half, and was bought in 2008. I also had one other Energizer CR2032 from the batch I bought in 2008, and it had never been out of the sealed package. I opened it and measured its voltage at 3.224 volts. So the "brand new" battery from SwatchBattery.com was barely (0.021 volts) better than my used one, and much (0.208 volts) worse than my three year old shelf stock.
I then tested the remaining batteries in the batch of five that I had received. The best in the batch was 3.274 volts, which seemed OK. The others measured 3.248 (also OK), 3.116 (marginal), and 3.072 (poor). I believe this range of voltages shows that these batteries were at the end of their shelf life, and all but the best specimens were already dying of old age. I wouldn't place any bets on how much use any of these batteries could provide, given the obvious deterioration of the batch right now. More importantly, I wouldn't count on getting "Brand New & Guaranteed Factory Fresh" batteries from SwatchBattery.com, as the listing stated.