I have only had these a few months and just stared to use them after exhausting my supply of non rechargeables. I already have one dead battery. I should have opened and tried them before the very short 30 day warranty.

Not fond of aaa, but recently picked up several of the light switch lights from job lot before a storm. I already have tenergy cr123 & aa with no problems. Those lights take 4 aaa/ea so now have 3 of those lights mounted next to the regular light switch. Can walk room to room and flick a switch during an outage.

I replaced the batteries in all my home cordless phones at a terrific price.

It seems that more and more items require AAA-size batteries; and I use a lot of them!

Twice the capacity of the originals at a reasonable price. So far I'm very impressed.