HiLetgo 10pcs 5V 1A 18650 Lithium Battery Charging Board TP4056 Lithium Battery Charging Board Micro USB Charge Module with Protect

I have read that HiLetgo products seem to be priced based on the possibility that a couple of them may not work, and maybe this is true, but I have not had that problem so they are a great deal. I converted a Coleman lantern to use two 18650s for power and have one of these charging them in parallel and it works great. Charge time is not fast, but I have about 15 hours of run time on my lantern and I don't have to buy D batteries anymore. I have plenty more 18650s and 9 more of these boards to make projects :)

This simple to use charger with overcharge protection is easy to use and dirt cheap. I've used several now in little projects they have been reliable so far. Two things to keep in mind; It's designed to charge one 18650 Lithium Battery but will safely charge two at once. Do NOT charge more than two batteries in series! Although you may charge while there is an active load on batteries this board is not designed for that. It's best to turn off the load while charging.

Work great for balancing batteries where the BMS can't do the job or where a cell is weak/damaged. I was able to get more time out of a damaged battery pack. Don't expect miracles--a bad cell eventually needs to be replaced.

it is easy to solder on and it work well charges my 3.7v lion ion pretty fast would recommend just that it overheats a lot

I like these because they are easy to use. I happened to have 3 mini-usb cables and power adapters, so was able to simultaneously top-up the three low cell banks in my 10 bank ebike battery that had been sitting around for two years. I soldered wires onto the outputs of the board, and plugged the wires into the bms connector to access the individual cells. I did manage to destroy two of these charger boards by accidentally brushing the wrong contacts and exposing the outputs to 12 or more volts. but I still have 8 remaining out of the 10, so no big deal. I did see that they were only topping up to 4.15V, not quite 4.2V. Within their specs, so not a deal breaker. Now my ebike battery is balanced and can be used again, saving me $100 or more.

These are as simple as it gets for charging 1S Lithium batteries. You will need to solder in power and charge leads - but the holes are near the edges of the board and easy to solder. Be careful to mount it somehow and protect it from anything toughing it. Its easy to short circuit the board if its not protected. I went though a few because I wasn't so careful....but they are really cheap and you get a lot of them! The board also gets a bit hot while charging - so mount with silicone or something heat resistant.

I have an electronic rain gauge that is powered by two AA batteries. The location of the outdoor transmitter is not convenient when the batteries need to be replaced. I decided to solar power it and use rechargeable batteries. The solar panel did not come with a controller needed to prevent overcharging and back-feed to the panel. This device will do that. It's easy to install and is effective. It's good that there are more than one in this pack. I fried the first one with a poorly placed soldering iron.

TL;DR: Don't use this for anything but 18650 LiPo cells. Everyone wants faster charge rates and all that. But please pay attention people: If a LiPo cell catches fire, NOBODY CAN PUT IT OUT. Be safe and charge the cells on a fire-resistant surface such as a metal dust pan so that you can take it outside if it catches fire. Also, I recommend charging this in a place away from your house. The resistor at the PROG pin (pin 2 of the TP4058 chip) is 1.2 k ohm. It is not suitable for charging smaller cells such as 13400 series LiPo cells that one may extract from a used vape. For smaller cells, this resistor should be greater (5 k to 10 k ohm). If you have the tools, I suggest replacing R3 with a 2 k ohm resistor for 18650 batteries or a 10 k ohm resistor for 13400 series batteries. If you don't have that, at least run this thing with a current-limited 5 volt supply. Get an old, cheap USB supply that only puts out 500 mA or so, and use that for your 5 Volt source. Aside of the risk of battery fires, this board may shorten the life of the cell. You CAN charge a smaller cell at greater rate than 0.2C (C being the mAH rating of the cell). But you will likely reduce the number of charge/discharge cycles of the cell to less than half of what it may have been specified for. Be Safe! Jacob Brodsky, PE Amateur Radio Station AB3A

Good quality.

المنتج ممتاز لكن انا طلبت عشر قطع واللى ولى لى ثمانى قطع فقط

the charging socket is better to be type C

these are the perfect answer to extending battery life in smaller projects affordably.

انا طلبت هذا النوع من شاحن البطارية قبل عيد الاضحى بخمسة أيام ووصل لى بعد عيد الاضحى بخمسة أيام ...لذا فقد تم التصرف لاتمام عملي قبل عيد الاضحى وأصبح هذا الصنف ذاءد عندى