FYD-835 Coffee shop power bankSell points:1.20000mah big capacity,Plug and Play.2.Battery beared with UL and UN38.3 certification.3. The PCBA board passed 3C FCC CE and Rohs certification.4. Quick charging ,it available charging to 4 phones or tablets at same time, and every one output ports with current could be reach 2A.5. Overcurrent, overvoltage, over discharge, short circuit and over temperature protection.6. Easy charge and discharge in the same time.7. Applying for : Coffee shop,Restaurant,Hotel,Bar and Recreation place.Specification:1.Input:DC12V/2 A2.Output:DC 4.75V~5.25V3.Capacity: 20000mAh (or customized 20800mAh)4.Product size : L130mm*W113mm*H40mm(Base) L197mm*W110mm*H46mm(Main unit)5.Charging time : 5-6 Hours (fully charging to power bank)6.Exchange rate: 95%7.Standby current: less than 20uA8.Working temperature: -10°~+50°9.Storeage temperature: -20°~+80°Operation:A.Take a short press show current battery level with lasting 8 seconds.B.Auto chariging after connected with power.Power Indication:A.When power bank charging to phone or tablet that battery indicator light show in blue color :1 LED light lighting indicate power ≤ 25%2 LED light lighting indicate power ≤ 50%3 LED light lighting indicate power ≤ 75%4 LED light lighting indicate power ≤ 100%B.When charging to power bank that battery indicator light show in blue color.1 LED light lighting indicate power ≤ 25%2 LED light lighting indicate power ≤ 50%3 LED light lighting indicate power ≤ 75%4 LED light lighting indicate power bank is full charged.