An unusual path to a power-handling DAC by merging an upside-down LM337 regulator with a PWM circuit to make a 20-V, 1-A current Continue Reading ...

That means looking out for short circuits, over-charge, and over-discharge conditions. It can charge at up to 2 A (up from 1 A on the TP4056), and includes a handy LED “battery gauge” on the ...