Instruction Manual(OXA0091) How to calculate the conversion rate of power bank? The formula is:（battery supply voltage * battery capacity）* 0.9 / battery output = output capacity (approximately) Then OXA-91 output capacity = (3.7V*10000mAh)*0.9 / 5V = 6600mAh For example, a mobile phone such as iphone 4s with 1420 mAh battery, So charging times = 6600mAh / 1420mAh = 4.8 (approximately) How to use Charge other mobile devices Instruction OXA External Battery Instructions Use for mobile devices with DC-5V Input. Please read the this manual before using. Product introduction OXA-91 is a portable mobile battery built in with Lithium battery with 10000mAh capacity, which can charge many digital devices, such as phones, iphones, ipads, MP3, MP4, PSP etc. One input end of charger has a Micro USB port, other 2 standard USB ports with 1A and 2.1A can meet the needs of most digital products. Security protection design: short-circuit protection and over current protection. Due to the built in MCU of the product, it can smartly display the real-time capacity and charging status on the blue backlight LCD screen, capacity display can be accurate to 100%, besides it equipped with high light LED flashlight. How to use Activate output---- LCD turn off when battery goes into sleep mode in standby. Two ways to activate. One way: automatic identification load mode In Standby, the product will automatic identify and activate 5V output while standard USB port turn into load; meanwhile the LCD blue backlight will light and auto display entire content, after one second, it displays real-time capacity and charging status. Another way: ON/OFF manual mode In standby, long-press ON/OFF button on touch switch to activate circuit start and activate 5V output; meanwhile the LCD blue backlight will light and auto display entire content, after one second, it will display real-time capacity and charging status. Cut off output----- two ways to cut off output while battery is in discharge status: One way: automatic identification load mode When battery is discharging, the unit can automatically identify and cut the power when standard USB port release overload 60 second later, and simultaneously turn off the display. Another way: ON/OFF manual mode When battery is discharging, long-press ON/FF button on touch switch can directly cut off output, and simultaneously turn off the display. Blue backlight working status Battery enter in working status from standby, blue backlight will light, and die out 30 seconds later, then press ON/OFF button once, blue backlight will be light after 30 seconds that is convenient to read the LCD screen. LED flashlight function OXA-91 has LED flashlight in the front of product, mainly used for lighting at night. Flashlight will turn on. Press ON/OFF button twice within one second, and press button like this again, flashlight turn off. Protection ---- Overcharge protection ---- Over current protection (Will automatically resume after being released from overload) ---- Short-circuit protection (USB output will shut off to protect devices, it resume automatic after release from short-circuit ) ---- Built in battery protection (battery has double protection by software and hardware) Structure Parameter Dimension(L*W*H): 108mm*72mm*22mm Weight(net): 241g Capacity: 3.7V 10000mAh 37 Wh Input: DC 5V 1A Output: 5V 1A / 5V 2.1A ≥30Wh Cycle time: 5000h Warning: It may cause fire, electric shock, or destroy electric devices if you do not abide by following safety note. Don’t throw, short out or disassemble battery; don’t place it into high temperature or water. Be sure to stop charging if the unit or your devices appear expansion phenomenon. Please place it somewhere a child could not reach so as to avoid accidents. Note: Before charging mobile devices, please check connection if it is right between cable and adapter. It is suggested that battery be charged by regular power adapter supply to avoid any untoward incidents. Thanks！