TP5100-1S Lithium Battery Charger

Charging my model airplanes in the field is a bit of a hassle. Inexpensive wired chargers are unreliable and prone to overcharging. Dedicated model airplane chargers are overkill and bulky, so I decided to make my own.
I have batteries around 400mAh, so a 1A charging current is sufficient; current limiting is crucial. Most current charging ICs are designed for power banks, and 2.4A is considered low; this current is very damaging to small batteries.
So I tried several older products: TP4056, 5100, and IP5305.
The original Topmicro 4056 worked stably, but the input voltage was limited to 5V, and the 1A charging caused excessive heat and low efficiency; third-party ones were even worse.
The IP5305 might be a counterfeit, only providing 200mA current, and the hot-swapping power indicator was malfunctioning.
Ultimately, I used the TP5100, with a 5-15V input, Type-C interface, and 3 channels charging at 1A each. Full power requires 3A input; don't charge simultaneously if the power supply isn't powerful enough.
Almost all of them use surface-mount components, and you can solve the problem by buying a barbecue grill for a little over ten yuan.