I don't normally leave feedback but I am very disappointed with the quality of this item and would like to warn other potential buyers. Whenever my phone is switched off and I try to charge it, the phone displays the message "Battery disconnected". The battery only appears to charge if the phone is switched on but I am not sure if the phone is able to read the status of the battery. E.g. My phone will tell me that there is no charge left yet it remains switched on for another few hours even when in use! When I connect the charger, the charge goes from 0% to 100% in a matter of seconds. Often, the phone will switch off randomly despite being almost fully charged.
I do not have this problem with the original battery that came with my I5700 which leds me to believe that this product is either faulty or not a genuine Samsung battery.