12V Lithium Battery Power Indicator Board

Nickel-plated Strip for 18650 Lithium Battery

49Inline DC-DC Buck Converter Step Down 4.75V-24V to 1V-17V 1.8A(max < 1 minute) 1.2Amp Constant current.

Adjustable 2A adj DC/DC 78xx supply

Single cell lithium charger with auto switchover. 

127Pcs Assorted Polyolefin Heat Shrink Tubing Tube

MT3608 2A MAX DC-DC Step Up Power Booster Module with USB Type C interface.

2V to 30V DC Buck-Boost Power supply 35Watts.