Unbeatable in terms of performance

I for years a whole range of devices in my household - keyboard, mouse, frothers for milk, Sony Walkman Professional, pointers for the projector, etc., etc. - operate with conventional rechargeable batteries and disposable batteries'm not a fan of, I have a tried whole range of batteries.

Conclusion of my years of experience with batteries:
As for the delivery of power, the Varta Professional 2700mAh AA is unbeatable. She's so much better than any other battery, I've tried.

My 'tester' is a foamer which has gotten a hit years ago and runs slightly out of round. Any other battery breaks down with this unit. Even bought from electric Conrad GP.2500 with - on paper - 200 mAH less power, brings, fully charged, the device only tired on their toes.

Similarly positive experiences I have when using these batteries with my Sony Walkman Professional recording device that is powered by 4 AA batteries. It works better and longer than with the 2700 mAh Varta with no battery.