How to choose a more reliable home energy storage inverter?

Nowadays, many families are equipped with photovoltaic panels and energy storage batteries, which not only want to save electricity by 

peak-valley electricity prices, but also can be used as backup power supply in case of power failure. However, many people found that the 

electricity stored was not enough, or the home appliances were still cut off when the power was cut off, and even the equipment was hot. 

Most people pay attention to the battery capacity, and think that the greater the degree, the better, but ignore the core component of the 

whole system-energy storage inverter. In fact, the selection of inverter is the key to whether the household energy storage is good or not, 

and no matter how big the battery is, it will not work.

Many people choose the first pit that the inverter steps on, that is, only look at the battery capacity and ignore the power matching. Just 

like a 16-degree battery, if it is equipped with a low-power inverter, when you want to turn on the air conditioner and the induction cooker, 

you will stop it directly because of overload, and it will be useless if the battery is full. When choosing, you don't have to blindly chase after 

high power. First, calculate the total power of household appliances used at home at the same time, and then reserve a margin of about 

20%. For example, the total power of refrigerator, lighting, TV and router is less than two kilowatts at the same time, and the model with 

three kilowatts can meet the basic reserve; If you want to drive high-power household appliances such as air conditioners and induction 

cookers, it will be safer to choose a five-kilowatt model, and you can also withstand the instantaneous impact of household appliances 

starting.

The waveform type is also a detail that is easily overlooked, which is directly related to the service life of household appliances. At present, 

there are two kinds of modified wave and pure sine wave in the market. The cheap modified wave inverter with a light bulb and an ordinary 

socket is ok. It can be used to bring precision home appliances such as computers, refrigerators and inverter air conditioners, which is prone 

to loud noise and equipment heating. Long-term use will also shorten the life of home appliances. Pure sine wave output inverter, the output 

power is basically the same as the power grid, whether it is with precision household appliances or motor equipment, it is very stable and will 

not damage the electrical appliances. It is no different from the normal power grid, so it is more worry-free for households to choose this one 

first.

In the functional mode, it is more practical to give priority to the model that is integrated with and off the network. Pure grid-connected mo-

dels will stop as soon as the power grid fails, which will not play a backup role at all; Pure off-grid and can not be linked with the power grid, 

so it is very limited to use. The off-grid integrated machine is much more flexible. When the power grid is normal, the electricity generated by 

photovoltaic is given priority for home use, and the excess is stored in the battery, and the battery can be connected to the grid to sell electricity 

when it is full; Once the power grid fails, it will automatically switch to the off-grid mode and use batteries to supply power. There is no need for 

manual operation in the whole process, and the household appliances will not be disconnected. It can save electricity and serve as a backup power 

supply, killing two birds with one stone.

The conversion efficiency and security should not be sloppy. In an inefficient inverter, electricity will be wasted in the process of AC-DC conversion, 

and the actual use of 10 degrees of electricity may be less than 8 degrees. Over time, the effect of saving electricity is greatly reduced. Reliable ho-

usehold energy storage inverter, the conversion efficiency can generally be above 90%, the loss is small, and the photovoltaic and battery power 

can be fully utilized. In terms of safety, basic protections such as over-voltage, under-voltage, overload and short circuit are standard, and grid-

connected models should also have island protection, and the power grid will be automatically disconnected during maintenance to avoid potential 

safety hazards. These are all basic configurations that cannot be saved.

In the final analysis, the bigger the battery, the better the household energy storage system. As the center of energy conversion, the inverter directly 

determines the stability and experience of the whole system. In the early stage, it is more cost-effective and worry-free to choose the right inverter 

than to blindly increase the battery capacity.

If you need type selection and transformation, you can consult Baoweite for the scheme. Thank you for browsing. You can collect official website of 

Shenzhen Baoweite Power Supply Co., Ltd.