These rechargeable batteries are cost effective but they take some time to charge but it may be my chargers fault. I haven't had a chance to use any of the newly recharged batteries to see how long the charge lasts though.

Great upgrade for solar lights. Light came with 100 mah batteries and these are 10 times the capacity

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.