# 🔋⚡A budget-friendly 1000W (104 A*h) Charging Station to survive a power outage.

## Метаданные

- **Канал:** ▶️ Radio-Lab UA
- **YouTube:** https://www.youtube.com/watch?v=qzVtqDkziko
- **Дата:** 27.12.2025
- **Длительность:** 22:15
- **Просмотры:** 8,510
- **Источник:** https://ekstraktznaniy.ru/video/47087

## Описание

⏩ Greetings! In this video I tried to show how you can assemble a simple and inexpensive charging station with a capacity of 1000W and a 104 A*h battery with a pure sine wave at the output, from which a REFRIGERATOR, boiler, pump and other electrical equipment can work, you can also power a home from such a charging station. (Pure sine wave inverter). 👉 The video is primarily for those who want to try to assemble a charging station with a pure sine wave on their own. If you do not have enough knowledge to assemble, then it is better to buy a ready-made charging station.

⚠️ ATTENTION! Due to the fact that the Chinese have started selling many green BMS boards with fake power transistors and such defective BMS boards do not hold the declared power, then it is better to buy and use WHITE BMS boards that are 100A.

🍺 Special thanks to those who support the channel with donations and thanks to the channel sponsors.
💲For monetary gratitude💲
👉 https://send.monobank.ua/jar/6dKFDUky7i

👉🎬 Vide

## Транскрипт

### ​​​​ - introduction []

Welcome to the channel. Vladimir is at the microphone. In this video, I will show you a budget version of a self-assembled charging station. This is a normal working solution for those who do not have the money or desire to purchase ready-made factory charging stations. And for more than two years now, I've been working on a budget self-assembled charging station, which is what this video will be about. It is simple, reliable, inexpensive and works fine. This charging station powers the home with the necessary electronics, including the refrigerator. I didn't put all this together in a separate case so that the assembly would take up less space. And it also happens that I disconnect and use the batteries for other tasks. The main advantage of such a charging station is that over time, if necessary, you can add batteries and increase the total capacity and power of the assembly, which is important when you don't have money for everything at once. At first, I only had two batteries so that the refrigerator could start and work, but now I have four and in the future I plan to add two more, or maybe four batteries. Also, over time, you can buy a charger with higher currents to charge batteries faster, add functionality, and so on. The ability to improve and modify the product is very convenient and versatile. In general, a charging station consists of

### parts for the charging station [1:33]

three main parts: an inverter, a battery, and a charger. And here are all the modules needed to assemble the charging station. This assembly is based on 12 V battery voltage. I don't have large loads and 12 V voltage is simpler, safer, and more common. And you can power a lot of other devices from 12 V. I have an inverter like this with a supply voltage of 12 V and a nominal power of 2000 W, a peak power of 4000 W and a pure sine wave at the output. Standard inverter in standard design. This inverter is about a year old. And such power with a margin is needed to start the refrigerator, because the refrigerator itself can have a high starting current. But a nominal power of 1000 W and a peak power of 2000 W will be sufficient to run most household refrigerators. The inverter can be different and from a different manufacturer, but it is better to buy one with a margin of power and a pure sine wave at the output, which is necessary for the normal operation of the refrigerator, boiler, pump, and so on, for the normal operation of everything that has electric motors.

### Li-ion 1650 3S10P batteries [2:54]

The batteries I use are these self-assembled four-piece 12. 6 V lithium-ion 3S10P batteries assembled from 18650 lithium-ion cells. There are 30 separate 18650 batteries in one battery. The total capacity of one such battery is 26 or 26,000 mA. And four such batteries connected in parallel have a capacity of approximately 104 Ago. I have a video on my channel showing how to assemble such batteries. Links will be in the description under this video. You can assemble such batteries yourself or you can ask someone to assemble them. Each individual battery has its own 40 A BMS protection board, nominally up to 20 A, and an additional active balancer that keeps the voltages on the sections the same regardless of the battery charge level. This is very important when connecting battery assemblies in parallel. And four such batteries are connected and operate in parallel to increase the total capacity and maximum operating current. Why these batteries and this solution? Well, it's easier and cheaper for me, and I can gradually add batteries, which is easier financially. If something is wrong with one battery, it can be disconnected for repair, while the others can continue to work.

### defective BMS boards [4:27]

One of the problems was that defective BMS boards with fake transistors were found, which could not withstand operating currents, heated up so much that the solder melted on them and the PCB darkened. There are times when there are shortages with inexpensive BMS boards. The defective BMS boards were replaced with normal ones and now the batteries continue to work normally. The charger I'm using right now is this one

### charger [4:52]

. Li-ion 3S batteries with an output voltage of 12. 6 V and a charging current of up to 10 A and a 100 Ah battery. This type of charging will charge in approximately 10 hours. If you need to charge batteries faster, you simply need to buy a charger with a higher charging current. Or you can use several identical chargers connected in parallel. If with specific exercises, it is possible. The main thing is that the charging does not exceed the allowable total maximum current for the battery assembly. The charging current of assembled batteries with a capacity of 26 Ah is up to 26 A, but the maximum for the BMS boards used is 20 A, and preferably no more than 15 A. Since the four batteries in this assembly operate in parallel, the maximum charging current for such an assembly is up to 60 A, 15 A for each individual battery. And a 60 A charger will charge such a battery pack in about two hours. To connect

### adapter for connecting batteries [6:04]

the batteries to the inverter and also charge them, I soldered this adapter. To assemble the adapter, I bought copper tips, 10 AWG and 12 AWG wires, XT60 connectors, heat shrink, and so on. Additionally, a charge level indicator has been added for the three-section lithium-ion battery. Here is the adapter diagram. Він дуже простий. Here, all the connectors are soldered in parallel and converge on the power copper tips. The main thing when soldering is not to confuse the polarity of the soldering of the XT60 connectors and the polarity of the wires on the battery charge level indicator. The connectors on the adapter are XT60 T-Type for connecting batteries and 1 XT60 MAMA for connecting the charger. The copper tips will be connected to the inverter. The adapter is assembled, tested, and can then be connected to connect everything into one whole. I will connect all these parts into

### assembling the charging station [7:11]

one working device. First you need to connect the adapter to the inverter. It is imperative to observe polarity here. I have tips with different colors of heat shrink. Red is plus, and black is minus. And well, you need to clamp the tips on the inverter contacts, preferably using a thread lock, because the currents can be high, and with poor contact there can be strong local heating up to the point of fire. I connected the adapter, but there's

### parallel connection of batteries [7:43]

no need to rush to connect the batteries. Only identical batteries with the same voltages or, in other words, with the same charge level can be connected in parallel. Here I check the voltage of all the batteries with a multimeter and they are almost the same. With small deviations of a few hundredths of a volt, it is also possible to connect batteries in parallel. Battery voltages are gradually equalized by small currents. If the battery voltages are very different, the easiest way is to simply charge the batteries individually and then you can connect them in parallel without any problems. The voltages of all four of my batteries are almost the same. They can be connected in parallel. But if the voltages on the batteries are very different, then in this case they cannot be connected in parallel, because the more charged battery will start charging the less charged battery. And the greater the voltage difference, the greater the currents will flow between the batteries to equalize the voltages. Here is a complete analogy. If, for example, you connect two gas cylinders with different pressures to one pipe, where the voltage level is equivalent to the pressure, and large currents flowing between the batteries can damage the batteries themselves and the BMS protection boards. The voltages of all four batteries are almost the same and they can be connected in parallel without any problems. So I connected everything and everything is fine. Due to the presence of BMS protection boards and active balancers on each battery separately, all voltages on the batteries will always be the same and each individual battery will always be balanced by sections, regardless of the battery charge level. This is very important and ensures the safety of using batteries when connected in parallel. Next, all four batteries connected in parallel will work as one larger battery. They will charge and discharge

### charging the assembled charging station [9:50]

together at the same time, like one larger battery. Here is a picture from a thermal imager when charging batteries connected in parallel, and you can see how passive balancers work. There are no overheatings on the power lines. Uneven heating of BMS protection boards is minimal deviations. according to their work characteristics. And this picture is normal when connecting batteries in parallel with inexpensive BMS protection boards. Active balancers align the voltage sections on each battery separately. Here I charged four batteries connected in parallel with one charge and the voltages on them are the same. and discharge. Four batteries connected in parallel will together act as one larger battery. The self-assembly

### switching on and idling [10:26]

four batteries connected in parallel with one charge and the voltages on them are the same. and discharge. Four batteries connected in parallel will together act as one larger battery. The self-assembly charging station is assembled and ready to use. In fact, it is an inverter with batteries, but together it functions as a charging station. It is advisable to tie the batteries together at least with cable ties so that they do not accidentally fall. For beauty, this can be installed in the case, but this also adds additional dimensions. It is highly advisable to install a piece of PCB or a piece of thermal insulation material between the inverter and the batteries so that the inverter does not heat the batteries. My workload is small, so I'll leave it as is. And I don't attach the batteries because I use them for other tasks. Next, I will show you a little bit about how the assembled charging station works and what it can do. The inverter turns on as standard and the assembly is ready to work. The no-load current for this inverter is approximately 1. 4. Oh, that is, just turned on, this inverter consumes about 16 watts per hour, which is not much, but sometimes it needs to be taken into account.

### powering an incandescent lamp [11:47]

I'm trying to connect a 100-watt incandescent lamp to the inverter. And there are no problems here at all. According to measurements, the lamp consumes 100 watts, and the inverter consumes about 10 amps of current from the batteries.

### powering a refrigerator [12:04]

Next is the main test with the refrigerator. My refrigerator is not new and has a regular compressor. Refrigerators usually have high starting current. I turned on the inverter and then tried to connect the refrigerator to it. As you may have heard, the refrigerator started up and is working normally. When starting up, the refrigerator briefly consumed more than 1100 W, more than 1 kW, and then, when the compressor started, the consumption dropped to 120 W. At the moment the refrigerator was started, the current from the batteries exceeded 100 A and then decreased to the normal operating 11 A when the compressor had already started. First, there was a measurement in the starting current mode to fix it, and then a measurement of the normal operating current with the compressor already running. In the thermal imager, everything is within normal limits. There are no overheating. Four such assembled batteries start the refrigerator normally. Two such batteries can also run a refrigerator. It's harder for two batteries, but the refrigerator also starts and works.

### powering a heating system pump [13:50]

Heating system pump. Also, everything works fine. The inverter has a pure sine wave at the output and the pump motor works well and without problems. And here's the view from the thermal imager. Everything is fine with heating.

### backup power for housing [14:12]

I can also power my home with this self-assembled charging station without any problems. And here I have a place where I did everything to connect the charging station. I have a manual reserve input switch installed in my switchboard, which switches the home's power line between the mains and a separate outlet into which the inverter is connected. Back voltage is impossible with such a scheme For better understanding, here is a simple diagram. A regular outlet for connecting an inverter is not very correct, but so far I have it. And nearby there is another outlet from the home network, into which you can conveniently connect a charger to charge the batteries of the charging station when there is voltage from the network. Here I simulate the disappearance of the mains voltage. I easily switch housing. to a self-assembled charging station. And everything works: lighting, internet, refrigerator, heating system pump, laptop, and so on. The average consumption in my home is approximately 140-200 watts per hour. And such a charging station with a battery of about 100 Ah will last me about 5 hours. If the outages are very long, I only power the refrigerator, and during very long outages I turn on the inverter manually every half hour to use the energy from the batteries as efficiently as possible. And that's how simple it is to switch back to the power grid. Here is a view from the thermal imager and everything is within normal limits according to the heating. There are no overheating. It is highly advisable to add thermal insulation material between the inverter and the batteries so that the inverter does not heat the batteries under high loads and heat. But my inverter doesn't get very hot, so everything works as it is. Charging is very simple. When there is electricity from the mains, I plug the charger into the appropriate outlet and charge the batteries. The batteries are all charged simultaneously from one charger. Everything is convenient for me here and in one place. When the home is powered by an inverter, the charger must be unplugged from the outlet to avoid additional battery energy consumption.

### powering a low-power heater [16:46]

I connect a low-power heater and everything works fine. The temperatures on the batteries and inverter are also normal. But for heavy heating of more than 1 kW, such as a powerful electric kettle or microwave, these four assembled batteries will not be enough and you will either have to add more batteries in parallel or use low-power heating devices. Here, the total current consumption from the batteries is approximately 36 A to power the heater. The batteries and BMS protection boards used can handle such a load normally. There are no overheating. And for such an assembly, I do not recommend loading more than 400 W on a permanent basis on four such batteries in the interests of banal safety precautions. or you need to increase the number of batteries connected in parallel.

### charging mobile devices [17:50]

You can charge your phone or various mobile devices from such a charging station using standard 220 V inverter voltage using a regular charger. Or, as an alternative, I use this USB module with an XT60 connector, which I connect to the common battery charging connector and get a huge PowerBank. Also, if necessary, one battery can be disconnected, taken with you somewhere and charged on the go, your phone or other mobile devices. There are different USB modules with different numbers of connectors. With these, you can charge several phones at the same time. After such use, the battery must be recharged so that the voltage is approximately the same as other batteries. And then you can connect the battery to others. This is also convenient

### using battery capacity [18:50]

due to the fact that such batteries will not be completely discharged, because the inverter will turn off at a voltage of 10 V, that is, there are discharge schedules for lithium batteries depending on the load current. And the greater the load, the less capacity the batteries will be able to provide. In my case, most of the time. The load currents for each individual battery are less than 0. 2 of the total capacity of the check or each individual battery. That is, at a battery voltage of 10 V and 3. 5 V per section, there is little left in the batteries, and underdischarge greatly increases the number of cycles of lithium batteries. And this also applies to lithium iron phosphates. What about batteries and why exactly ITyo 18650? This was simply cheaper and easier for me, and I'm gradually adding more collected batteries. As for the safety of

### rules of use lithium batteries [19:50]

lithium-ion batteries, you just need to follow the basic requirements for their operation. And we must remember that any batteries must not be overloaded, overcharged, overheated, damaged, kept in direct sunlight and in humid and chemically active rooms. But if you have the money for lithium iron phosphate batteries, then this is also a very good option. I've had this self-assembled charging station for

### conclusions and recommendations [20:20]

three years now and I've had no problems with it. The main thing is not to overload it, and to monitor its condition and battery voltage. Even if something breaks or burns out, you don't lose the entire device, and repairing such an assembly is possible and often simple, ranging from a simple replacement of the BMS boards to repairing or replacing the inverter. And this is for adequate money. Batteries can be added as needed if you don't have the money for the required capacity and power right away. If necessary, you can also buy a more powerful charger to charge batteries faster. That is, such a design is easily scalable, modernized, and repaired without any problems. The price of such a self-assembled charging station depends on the prices of spare parts, but even so, it will be much cheaper than ready-made charging stations with similar characteristics. Of course, if you have the money to buy a ready-made charging station right away, it will be easier and faster to buy a finished product. Also, if you have the money, then, of course, lithium iron phosphate batteries are better than the ones I have. But if money is limited, such a self-assembled charging station can be a very good alternative for adequate money, and it will help you survive a power outage normally. If necessary, such a self-assembled charging station is easy to assemble and works normally. I hope this video is useful. That's all for now. Links will be in the description under this video. I ask you to like, comment, and subscribe. Thank you for watching. See you in the next videos.