I bought these for several LED candles that were throughout our house. These candles are on 4 hours a day on the timer mode. After the regular D batteries only lasted a month on each candle, I switched to these rechargeables. These are lasting about one month on one charge and I've had them for almost a year now with no problems, so there is definitely a cost savings in the long run. I've also got some C Cell rechargeables and they work great too!! I am soon purchasing the double A batteries next. A great product!! I will never buy regular batteries again. Thanks Tenergy!!!

Much better than the Tenergy EBL. Last a long time in my Streamlight Lantern

I love rechargeable batteries, and these Tenergy D batteries have been recharged dozens of times with no decrease in their output. If D batteries are part of your needs (and who doesn't use at least some D batts?) be sure to get some of these and a Tenergy charger.

These Tenergy brand batteries are by far the best rechargeable batteries I have used to date. And believe me I've used quit a few other brands. I have some that have been charged a hundred times and are still going strong.

I have a short review after two weeks of use; quick to charge from new condition (roughly 3 hours). Will report back after continued use to assess usage time and related charge times. So far I am happy.