CC/CV buck module (LM2596, XL4015, HW-688)
XL4015 CC/CV step-down · in 8–36 V · out 1.25–32 V · set 12.60 V (CV) and 1.00 A (CC) · blocks reverse current · ~90 % efficient

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- IN+
- IN−
- OUT+
- OUT−
Lessons and builds that use it
- 50 Ah 12 V LiFePO4 battery (4S9P, 32700 cells) with charger (build)
- 100 Ah 12 V LiFePO4 battery (4S17P, 32700 cells) with charger (build)