For the money, a super-exchange reserve Akku.Wenn considering that an original at about 30 Euro is, is that a real Schnäppchen.Es served its purpose and has for me no "Macken.Wir have even 24 hrs. In use, for monitoring our Oma.Da the last has now given up the "spirit" after half a year, had to fast and cheap new her.Wir say Great value for money