HiLetgo 5pcs 1A 3.7V Lithium Battery Charging Board with Protection Type-C USB C Li-ion Battery Charging Board Over TP4056

I wanted to make a few lamps battery powered. Saw a video of someone using a board from this exact vendor. These boards are easy to use and pretty much self explanatory. The boards did not disappoint, it worked very well and I will make sure to find this vendor for future products.

I used one of these in a project for my daughter that runs a strip of LEDs off a rechargeable lithium 18650 battery. This board charges the battery perfectly and is very small, which works great for wearable projects. Just be prepared to solder some very small and tightly packed connection points. I especially appreciate that there are solder points to add an external USB connector so you aren't required to use the USB-C port that's on the board itself To charge the battery.

Worked for my project. As many others have stated, I noted that these will get hot during charge. However, temperature varies on how much charge the 18650 battery has left in it, prior to charge. For instance, if the 18650 is 3/4 empty, the charge board will get noticeably hot during charge, whereas if the 18650 is 3/4 full, the charge board is noticeably cooler during charge. The RED (Charging) and BLUE (Charged) LED indicators are a nice feature. No hook-up information came with these, but there is an email address to request it. The solder pads are small. I do NOT recommend soldering wire greater than 20AWG. 22AWG is perfect. You MUST be careful when soldering to prevent cross shorts to adjacent SMD (Surface-Mount Devices) i.e. components on the board. The "IN+ and IN-" terminals I didn't use. The "OUT+ and OUT-" terminals show voltage regardless of battery's status (charging/not charging) when measured with a meter. So, I didn't use these either. Charge cut off voltage was consistent at ~4.11VDC. Battery temperature was at room temperature during charge, regardless of battery pre-charge capacity. I DO recommend these. I gave them a 4 star, due to the lack of hook-up instructions.

This one has protection built in and at a super nice price (if you like a lot of them). I use them on most all of my battery powered electronics projects, very happy with them.

Very compact. No issues. I used it to replace/upgrade a broken micro-USB charging port on a wireless speaker.

So far 3 of the 5 are being used. Have not used the other two yet. Those in use are working recharging the small lithium batteries like the ones in sound cards and toys.

The price for these were great. Had found the same thing elsewhere that was a little more costly. Will buy them again if needed

1. The boards were not loaded with TP4057, as advertised, but with TP4056, which is very similar. The difference between chips is in setting the charging current, but the resistor value on the board was selected for the latter one. 2. The bottom layer of the board acts as a heat sink. When charging the fully discharged battery, the power dissipated in TP4056 is the largest, and the booard gets very hot (about 85 deg C). The board could be somewhat bigger so the heat sink was bigger (and cooler). 3. The board does not have mounting holes, so using it as a module in the project is problematic. Again, the board could be bigger and have mounting holes. Other than the above, the board works.

Perfect

These boards work well. One star off because 1. The chip installed is not a TP4057 (0.5A) but in reality it is a TP4056 (1A) in spite of the marking. If one has the curiosity to download the datasheets for the two chips you'll see that TP4057 is a SOT23 not a SOT8. 2. The supplier had no idea that the board has a protection chip equivalent to XB5352 that offers protection to over discharging. When I asked they said they didn't know,. Bu other than these clones appear to work as the real ones. My configuration was a 18650 battery and a light load

These came all connected. I was expecting them to be 5 individuals. I don’t have the means to cut them accurately. I don’t recommend this product.