Counterfeit (Fake) batteries?

[Tony Hwang]

I bought package of 4 AA Energizer Lithium Ultimate batteries the other day on eBay. Exp. date was like 2025. First time trying Ultimate model. I always used Lithium batteries in my weather station outdoor. Usually lasts way more than a year but this ones failed in two weeks. I could hardly measured voltages when I took them out. First thought was they must be fake ones (maybe from China). Back with advanced model. Interesting to note from CR, they rated advanced ones ahead of ultimate ones which costs few bucks more per package.

[bastardo barato]

Maybe try some genuine Panasonic Eneloops from Amazon?   

[KLayton888]

I've heard of Duracells being counterfeited in recent years.

[Percival P. Cassidy]

Many years ago I heard that Sony in the UK had found that they had fake audio cassettes in their own inventory -- perhaps someone had bought genuine ones then returned fakes for credit.

Perce

[clare]

Mostly out of India, from what I've seen and heard.

[alextct]

I have faced the similar problem, my AAA energizer batteries leaked after l ess than two months of usage in wireless keyboard (Exp date of battery till 2020 as stated on battery). The batteries were made in Singapore as stated on the battery. May i know how to indentify is the battery real or counter feit? I bought the battery from one of the renowned Hyperstore in Singapore which i think it is unlikely for them to sell counterfeited batteries.

[clare]

You pays your money and you takes your chances. - Unless you are IN Singapore, why buy in Singapore? Even the Kirkland brand batteries sold in Canada are "assemled in USA" So are the Energizer "D" cells I buy here in Canada.