They are used exclusively in the Shure microphone with controlled charges before the LIVE performances. Two batteries in the microphone and 2 in the in-ear, and they work for a year without losing their performance. Very reliable purchase.

I have been very satisfied! I replace them every 3 years or so, after 90-100 charges, and not because they don't work at all, but simply after such a long time their performance decreases and they drain faster.

I initially bought the Energizer charger package and now I only buy rechargeable batteries (AA and AAA) from the same company. I am quite satisfied.

This specific product is not worth it, the reason I bought it was favorable, however, this specific product, with triple the price that I had bought it for, lasted for at least 5 years of charging and discharging and it was the same product. So, they clearly compromised on quality. It's better to spend a little more and buy from reputable stores. I'm talking about this specific battery brand.

These specific rechargeable batteries from Energizer are among the best on the market.

All rechargeable batteries decrease in performance over time/use. They are durable, nevertheless, not that I do any intensive use! Regular household use, I am satisfied.

4 times longer it says then prefer panasonic or sunlight or varta these have less duration than the others you buy just are no.1 in sales carpets are mine the varta last excessively longer than these and they are 2100 while these are 2000 the varta even though I have used them more and they last in the same controller they last in the same controller and with more use or varta last up to 1 week longer and they are also cheaper