Lithium Battery Capacity Indicator Board (2S/3S/4S)

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

USB Type C PD/QC/AFC Fast Charge Decoy Trigger

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

5A DC-DC Step-Down Buck XL4005 Adjustable Power Supply Module

Lithium Battery Charger with Integrated 2A Adjustable Step Up Output Boost supply

6 in-Serial 12Amp Battery Management System

3A Dual USB 6V-40V To 5V Step-down power DC Charger Converter Module