System-S External battery pack Battery Charger for Samsung Galaxy Tab Galaxy Note Tab 10.1 (Electronics)
Four 2,850 mAh, 1.2 V battery charge the 4000 mAh battery of my Galaxy Tab 7 'of about 10% to about 65% again, while it is in standby mode. The maximum operating speed will be slower, depending on the applications that are running, by 3.5 - 4 minutes