USB lithium lipo 18650 charger 3.7V 4.2V to 5V 9V 12V 24V step up module Adjustable Output

Features:

• Before use, the default output is about 9V
• Input voltage 4.5-8V (with micro usb connector)
• Output voltage continuously adjustable 4.3-27V
• (Any voltage above 4.3V and below 27V can be output and adjusted by yourself
• Counterclockwise to increase voltage)
• Charging voltage 4.2V
• Charging current maximum 1A
• The maximum discharge current is 2A. You need to calculate the output current yourself.
• Output reference maximum current 5V 1.4A,  9V 0.8A,  12V 0.6A
• Quiescent current is about 0.5 mA
• Overcharge protection
• Over discharge protection No (or yes, 2V cut-off boost)
• But if the output is not blocked, the output will still have 2V)
• Cut-off boost voltage 2V. Add protection board depending on the situation.
• Size 3.3X2.3X0.9

• For example, VIN+ terminal is connected to 5V solar panel and BAT+ terminal can output 4.2V to charge 3.7V 18650 battery.
• The OUT+ terminal can output an adjustable voltage. You can adjust it as needed.
• Can be used for multimeter modification lithium battery charging