The Infineon TLD5542-1CHG_SHIELD is a battery charger shield compatible with Arduino UNO which can be powered either by a USB-PD adapter, or by a standard 12 V power supply. It can charge up to 6 lithium cells in series and up to 5 A of output current to a maximum of 65 W. Highly customizable with Arduino
SPI interface and an analog input current monitor
A 4-switch buck-boost converter
External reference voltage with 0.2% accuracy