I finally got my order in today. I ordered 10 packs of the Energizer Lithium AA's dated 2009. This was my first opportunity to test any of the old Lithium AA's against the new Lithium AA's and I found something very interesting. The new Lithiums, as was posted in earlier post, test at 1.5 volts right out of the package and the older Lithiums tested at about .2 volts higher, but this was the results when testing using a meter that placed no load on the battery. When I used a cheapo tester that works by placing a very slight load on the batteries, the old Lithiums start out at about 1.7 volts, but in a matter of a few seconds settle down to about 1.5 volts just like the new batteries. I bet nobody else has noticed this yet because any good quality Multi-Meter is designed to test by placing the least amount of load possible on the battery and this effect is only noticeable if the battery is under, at least, a very slight load. So I would guess that the run time of the old and new Lithiums, theoretically, should be almost identical in most uses, but the old Lithiums may be slightly better than the new ones when used for flash camera type uses, because they have a tad more initial umph to them which is very useful in charging a capacitor. I still have to wonder if that extra boost to the first few seconds of battery use wouldn't damage some very sensitive electronics. I would be willing to bet that the reason that the design was changed with the new batteries was because they had complaints because people were using them in other applications than just cameras (cameras being the primary use advertised for these batteries) and it had damaged the electronics in some of them. Can anyone confirm this theory? Anyway, I just thought you guys would be interested my findings and theories concerning the old and new Energizer Lithium AA's.
