The batteries are slightly wider and thicker than the originals batteries, they also feel a bit heavier. The dimensions are very borderline great, so that the battery stuck in the tray and then there is secure. Because it is slightly thicker one needs a bit of tact umd the battery cover to close.
But once installed it is secure and safe, the phone is my feeling after by the slightly higher weight even better in your hand.
To use the Ni-MH batteries as long as possible, I have two FRITZ! Fon's (with a charger) in action and let the phone Always be completely empty (Auto-off) before it is reloaded.
In order to keep the batteries at me after 15 months still very good and there are also long conversations with an almost empty battery, no problem.
I can recommend the batteries to any case very. If you only completely discharge the battery again invites you even after a long time a very durable battery in the phone.
