لوحة شحن بطارية ليثيوم صغيرة 5V USB 1A

The adjustable charging current was the main reason I grabbed this, and swapping the resistor took me about ten minutes with a soldering iron. Input via mini USB is a bit dated, but for a compact charging board that handles 1A it's done its job flawlessly in two builds so far.

Took a gamble on this tiny board for a DIY power bank and it paid off. The mini USB input makes it super easy to wire up, and the 1A charge rate is actually steady, not just on paper.

The 1A charging current is spot-on for my small 3.7V packs, and the mini USB input makes it easy to wire up without hunting for a special cable. Took a few minutes to solder, but the board is compact and does exactly what it should.