• Simply drop in 1-4*18650 batteries to make your own power bank (batteries not included)• Input voltage & current: DC 5V / 2A• Output voltage & current: DC 5V / 1A, DC 5V / 2.1A• Reverse polarity protection• Flat top or button top 18650 batteries both can be used in this power bank• With switch button• With battery capacity indicator and output indicator• English user manual included Classification- Product Type Mobile Power Banks DIY & Charger Aesthetic- Color White- Material Plastic Power & Batteries- Batteries Included No- Battery Form Factor 18650- Current Output 1 / 2.1 A- Input Type DC 5V- Maximum Supported Battery Length 70 mm.- Output Type DC 5V- Required Battery Count 1-4- Size: 130 x 80 x 25 mm.- Weight: 114g. Package- Package Contents 1*Power Bank Enclosure, 1*USB Cable (31cm), - 1*English User Manual ราคาขายชุดละ 650 บาท พร้อมจัดส่งฟรีทั่วประเทศ (ราคานี้ไม่ได้รวมแบต)อ่านเพิ่มเติม