1S 18650 BMS with Adjustable Step Up Converter

Design your own small power bank with this module. It can take 2-6 batteries in Parallel, and it will provide 5V 2A for its two USB outputs. It has all safety features characteristics that you find in any commercial power bank. You can know how much charge in the batteries from 4 on-board LEDs

• Input voltage: 4.5-8V
  
• Output voltage: continuous adjustable 4.3-27V (Counter clockwise to boost voltage)
  
• Charging voltage: 4.2V 
  
• Charging current: up to 1A
  
• Discharge current: the maximum 2A
  
• Output reference maximum current: 5V 1.4A, 9V 0.8A, 12V 0.6A
  
• Quiescent current: about 0.5 mA
  
• Overshoot protection: Yes
  
• Over discharge protection: None (also can be said yes, because 2V cut-off boost but does not block the output, output has 2V)
  
• Deadline boost:: 2V, depending on whether added the additional protection board
  
• Size: 3.3 x 2.3 x 0.9cm
  
• Connecting example, VIN + connect 5V solar panel, BAT + terminal can output 4.2V to charging 3.7V 18650 battery, OUT + side can output an adjustable voltage