In pairing with the here available at Amazon Ansmann 5035092 AA 2850mAh NiMH battery Digital 4p Setund a suitable power charger for these batteries, the battery Notpack works beautifully. At full load the Galaxy Tabs while charging with the system S-Charger battery health in about remain the same, with "normal" applications such as e-mails and Internet is a "real" charging exists, slightly slower than at the outlet.