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INPUT : DC5.0V OUTPUT : DC4.2V 2000mA COMPATIBLE WITH 18650 , 14500 , 16340 , 18500 Li-ion Batteries 2A FAST CHARGING AND SAFE USB PORT PORTABLE SOURCE INTELLIGENT CIRCUIT IT IS WITH HIGH EFFICIENCY ANG RELIABILITY 1WEEK REPLACEMENT IF FACTORY DEFECT COMPATIBLE WITH 18650 , 14500 , 16340 , 18500 Li-ion Batteries ⛔NOTE: NO COMPATIBLE FOR AA/AAA BATTERY 2A FAST CHARGING AND SAFE USB PORT PORTABLE SOURCE INTELLIGENT CIRCUIT IT IS WITH HIGH EFFICIENCY ANG RELIABILITY 1WEEK REPLACEMENT IF FACTORY DEFECT