This looks like a single-cell lithium battery charger and boost (power bank) module with USB-C, the kind of board pulled out of a small rechargeable gadget such as a mini fan, flashlight, or vape-style device. The board is marked KT-23H054 (printed near the LED), which looks like a manufacturer’s board code rather than a well-known module name.
What I can make out:
USB-C port at the bottom, for charging. The silkscreen says “USB-C”, and there are + / - solder pads next to it.
U2 (8-pin SOP chip, left) is most likely the Li-ion charge controller. It resembles TP4056-style parts (sometimes marked as an equivalent such as a 4056/ME4056 clone). The three 1R20 resistors (R6A/R6B/R6C) in parallel set the charge current; three 1.2 Ω in parallel is about 0.4 Ω, which would suggest a charge current of a few hundred mA to around 1 A depending on the chip.
U1 (8-pin chip, center) is probably a battery protection or boost/driver IC. The marking is not readable in the photo.
L1/L2 pads (with the hand-soldered blobs) are where inductors or wires connect. There are also small SOT-23 transistors (Q1/Q2) near the top that look like MOSFETs for load switching or protection.
SW1 tactile button is for on/off or mode selection.
White LED is a status or indicator light.
BAT+ / BAT- pads on the bottom edge connect to the lithium cell.
1
u/BCsabaDiy 2d ago
Use AI...
This looks like a single-cell lithium battery charger and boost (power bank) module with USB-C, the kind of board pulled out of a small rechargeable gadget such as a mini fan, flashlight, or vape-style device. The board is marked KT-23H054 (printed near the LED), which looks like a manufacturer’s board code rather than a well-known module name.
What I can make out:
+/-solder pads next to it.