This replacement battery I have installed already in 2 MEDION Navis. Bad experience in terms of capacity and durability, I have not yet (3 weeks). I've been using the device is not permanent - it is then not connected (in the car) and not turned off "right". In standby So is logically always drawn some power, the battery charge level is of course permanently something back: for example in one week about 25%. That's OK, I mean. The Navi can indeed be "real" off, then holds the capacity / charge level longer with security. Small drawback: the cable is shorter than the original battery, thus the battery is somewhat "difficult" to use in the unit.
