The battery really bring the pure relaxation in the use of many existing domestic battery and battery-powered devices. They are stored as batteries and simultaneously recharged. It has therefore always ready to use batteries are ready. Our oldest Eneloop are available from 2008, and still without limitation. 3 stars there is here only because I have received from Heiba Electronics Würzburg on 04/24/15 batteries with production date 08/2013. Normal would have to complain about the shipment, just missing me for confronting the time. The batteries even earn full 5 stars !!!