3.7V 5V Step Up 9V Output Module 18650 Li-ion Battery Charging Discharge Board

Packing List (bulk pack):\n\n--1 x Step up module \n\n \n\nSpecifiactions:\n\n--Output voltage: 9V\n\n--Input voltage 4.5 to 8V\n\n--Continous adjustable output voltage: 4.3 to 27V (turn anti-clockwise to increase voltage)\n\n--Charging voltage: 4.2V, max 1A\n\n--Discharging max 2A (be to calculated, but for reference: max voltage 5V 1.4A, 9V 0.8A, 12V 0.6A)\n\n--Static current: 0.5mA\n\n--Overcharge protection: Yes\n\n--Discharge protection: No (but stop step up when 2V)\n\n--Size: 3.3 x 2.3 x 0.9cm (1.3 x 0.9 x 0.35 inch)\n\n \n\nExample:\n\n--VIN+ connect to 5V solar power panel, BAT+ output 4.2V for 3.7V 18650 battery charging, OUT+ output to adjustable voltage, and adjust it yourself\n\n--Modify Li-ion charging battery on mulitmeter\n\n \n\n \n\nShipping Payment Returns About\n\n--We offer FREE shipping to the UK, and charge small shipping fee for other countries. We do not provide pick-up service.\n\n--We only ship to your eBay registered address. Make h