How Many Solar Panels are needed to Charge the Battery
Before installing a solar system, many people do not check the load of their home and only install a solar system based on what others say. They later face many problems, such as not being able to run all their home appliances on the solar panel, and their batteries not getting charged. So, before installing any solar system in your home, make sure to gather complete information about the load in your home.
The easiest way to determine the load is to use a Clamp Meter or you can buy a digital energy meter from the Amazon website, which will easily help you identify the load in your home.
Suppose you have a battery inverter, and it is running a load of 300 watts. Now, you need to run this load from the solar panel and also charge the battery. For this, you need to see how many ampere-hours (AH) your battery has and what its rating is.
If you don’t know the battery rating, we have already explained it in a previous post, so please read that post carefully to gain more knowledge about it.
How Many Solar Panels are needed to Charge the Battery
Most homes use a 150 Ah battery, but if you are using a normal battery, it will have a C20 rating, and if it is a solar battery, it will have a C10 rating.
To charge a 150 Ah battery with a C10 rating, you will need 15 Amps of current to ensure your battery charges properly. So, previously, we assumed your load is 300 watts, and now you also need to charge the battery with 15 Amps. Therefore, you will need to determine how many panels you need.
To run a 300W load, you will need a minimum of 400W solar panels. And to charge a 150 Ah battery, you will need at least 200W panels. So, here you will need 600W solar panels.
The reason we suggest 200W solar panels for the battery is that a 100W solar panel can generate approximately 5 Amps of power, so the power from 2 panels would be around 10 Amps. This way, your 150 Ah battery will be charged in 1 day because our batteries are never fully discharged.
However, if you use 300W solar panels instead of 200W, your battery will charge faster, and for that, you will need a total of 700W solar panels.
How many solar panels required to charge 100ah battery
To charge a 100 Ah battery, you will need at least 150W-250w Solar panels.
How many solar panels required to charge 150ah battery
To charge a 150 Ah battery, you will need at least 200W-300w Solar panels.
How many solar panels required to charge 200ah battery
To charge a 200 Ah battery, you will need at least 330W-500w Solar panels.
How many solar panels required to charge 400ah battery
To charge a 400 Ah battery, you will need at least 700W-1000w Solar panels.
Solar inverters for installing up to 700W solar panels.
Which inverter allows you to connect up to 700W solar panels on a single battery? Because in the market, you will mostly find solar inverters with PWM technology, which can handle up to 700W panels. Now, let’s discuss solar inverters with MPPT technology. In UTL company, you can find the most affordable MPPT type solar inverter, which has the model number Gamma Plus.
UTL Gamma + 1kva
UTL Gamma + 1kva is an MPPT type solar inverter that can handle loads up to 1 Kva. The Voc range of this inverter is 45V Vdc, so you can also use 30/60/72 cell solar panels with it. It comes with a 50A current rating solar charge controller.
You can connect up to 1 kW of solar panels to this inverter. So, those who are running a load of around 800W can use this inverter. By attaching 1 kW of panels to this inverter, you can create an excellent 1 kW solar system.
If this inverter operates on 12V, you will need to connect one battery to it. Those who don’t require extended battery backup can use a 100 Ah battery, which will be available at a lower cost. Those who need longer backup can use a 150 Ah or 200 Ah battery. The output of this inverter is Pure Sine Wave, ensuring that all your appliances work perfectly. This inverter comes with a 2-year warranty. You can use this inverter as a regular inverter and later add solar panels to convert it into a solar inverter.
Price: Rs. 12,700
This solar inverter is relatively expensive due to its MPPT technology. If we opt for a solar inverter with PWM technology and a certain capacity, it will be available at a much lower price.
Eapro H-1100
Eapro H-1100 is a PWM type solar inverter that can handle loads up to 1 Kva. It comes with a 50A current rating solar charge controller. You can connect up to 800W solar panels to this inverter. So, those who are running a load of around 700W can use this inverter. By attaching 800W of panels to this inverter, you can create an excellent 800W solar system.
If this inverter operates on 12V, you will need to connect one battery to it. Those who don’t require extensive battery backup can use a 100 Ah battery, which will be available at a lower cost. Those who need longer backup can use a 150 Ah or 200 Ah battery.
The output of this inverter is Pure Sine Wave, ensuring that all your appliances work perfectly. This inverter comes with a 2-year warranty. You can use this inverter as a regular inverter and later add solar panels to convert it into a solar inverter.
Price: Rs. 7,000
So, you can see that you can get a solar inverter with the same capacity at a much lower price. But here, the PWM technology solar inverter has a panel capacity of only 800W. If your load runs between 700W to 800W, you can use this inverter. The VOC (Voltage Open Circuit) of this solar inverter is 23V, so you can only connect 30-cell solar panels to it.
In this post, you have been provided with all the information you need about how many panels you need to charge your battery and which inverter would be suitable for you. If you use an inverter with more than one battery, meaning you have a two-battery or four-battery inverter at your home, you can ask in the comments how large a solar system you should get
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