Thank you for being with Samsung and sharing your concern. We would like to inform you that Samsung recommends to charge the device for 150 minutes in full drained mode as it is Standard Charging Procedure to charge any Samsung device. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
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