As inverter batteries store solar energy, it is crucial to understand when they are completely charged to prevent overcharging. In this article, we will discuss what to do when inverter battery is fully charged and if it is safe for the battery to be constantly charged. 

What to Do When Inverter Battery Is Fully Charged?

Solar panels have the capacity to be able to produce an almost infinite amount of electricity. Investing in solar panels is a cost-effective solution to recharge your inverter batteries if you have access to sunlight. When your inverter battery is fully charged, it implies that there is no more electricity that the solar panels can store. Still, whatever it is supplying will still be operated using electricity. Batteries have a maximum voltage they can produce, therefore if they are being overcharged, they will simply stop converting power until the charge has been decreased by constant use in addition to the amount that is needed to maintain passive losses.

There are a couple of things you can perform to keep your inverter battery healthy and extend its life when your inverter battery is completely charged:

1. The inverter must first be switched off. It can harm the battery if it’s kept on because it will keep charging even after the battery is fully charged.

2. Install power strips to connect your electronics and devices, and then connect the power strips to the inverter. This will enable you to conserve electricity and stop your devices from being overcharged.

3. If an appliance or electronic is plugged in but not in use, remove it from the inverter. This could surely make your battery last longer.

4. The battery’s positive and negative connections should be disconnected to prevent overcharging.

5. When not in use, turn off electronic gadgets because even off devices can still take power from the inverter battery. Only plug-in electronics while you’re using them to save energy.

6. Verify the battery’s water level and, if needed, add distilled water.

These are the steps you must take if your inverter battery is fully charged. Moreover, to safeguard the battery, it is very important to calculate inverter battery backup time.

But how do you know if your battery is fully charged or not? Let’s read further to know this.

How to Know if My Inverter Battery is Fully Charged

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The inverter is one of the most important parts of solar electricity. The inverter transforms the DC power generated by the solar panels into usable AC power for your house or place of business. The amount of time it requires for solar panels to fully charge a battery depends on a number of factors. Of course, one of the most important aspects is the weather. The amount of sunshine that can be used for energy generation can vary from day to day and unquestionably from season to season.

The following points will help you determine when your inverter battery is fully charged:

1. Look at the Battery Indicator Light

The charge indicator light on the majority of inverters will let you know when the battery is full. When the battery is fully charged, this light which is often green or blue will turn on. If you cannot locate this light, investigate whether your model has any, and if so, where it is placed in your owner’s manual.

Also See: Can Hybrid Inverter Work Without Battery?

2. Check Voltage Levels Using a Multimeter

If you’re unsure whether your batteries are completely charged or not, you can test them out with a multimeter.

To prevent electrocution while working on the system, first, check to see that all the solar panel wiring is unplugged. Next, connect one multimeter led to each terminal of a single battery (red leads to the positive terminal, black leads to the negative). If everything is in order, you should see a reading of 12 to 14 volts, just as was described earlier.

If curious, take a look at How to Test a Solar Panel With a Multimeter?

3. Check the Battery Voltage Screen

Looking at the voltage screen is another technique to determine if the inverter battery is completely charged. You can see on this display how many volts the batteries are currently at. When fully charged, most batteries should register between 12 and 14 volts. It has got to be charged further if yours registers less than 12 volts.

Also See: How to Read Solar Inverter Specifications

How Much Time Does Inverter Battery Take to Charge?

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It’s crucial to understand battery cycles if you want to keep your inverter battery safe. The number of charges and discharges a battery experiences is referred to as battery cycles. The cycle life is also impacted by discharge depth. Depending on the device and the power source, an inverter’s battery will take a different amount of time to charge. Some batteries can be fully charged in as little as 1.5 hours. Some are even quicker or some batteries can take longer hours to charge.

So, as mentioned earlier, the amount of time it requires for solar panels to recharge a battery depends on a number of factors. To talk about a specific model, a 12-volt battery should fully charge in between 6 and 7 hours under ideal circumstances. This time can be increased by unfavorable conditions while decreasing, for instance, by adding more and/or larger panels.

Cross-Reference: A Guide to Help You with Inverter Battery Charging and Other Maintenance Tips

How Long Does It Take to Charge 150Ah?

 We have already covered how long it takes to charge a battery and what to do when it is fully charged. But does a 150Ah battery take the same amount of time? Let’s find it out. 

A 150Ah battery can store 1800Wh of energy since it has 12 volts at its terminal. During the height of the sun’s rays, 1800 Watts are required to charge a 150Ah battery. If you figure in an average of 5 hours of sunshine per day, it will take 5 hours and a continuous power consumption of 360 watts to fully charge your battery.

Due to alterations in the environment during the day, a charge controller is required to handle varying power from the solar panels. Additionally, a charge controller must be able to handle at least 20 amps at the output, 25 volts at the input, and a controlled 14 volts (while charging) at the output.

Also Read: What Size Solar Panel to Charge a 50Ah Battery?

Is It Safe For The Inverter Battery to Be Constantly Charged?

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It is completely safe to charge the battery constantly using a solar panel because PV modules are made to do so. Because a charge controller controls the amount of power coming into the battery, you don’t have to be concerned about overheating.

Because it only uses the battery bank’s available power, the inverter is also secure. Batteries used in inverters are powered by chemical processes, and for these processes to take place, the battery must be completely charged. There won’t be any problems here if the inverter is the proper size.

Now you know how much you should charge your battery and what to do once it is done entirely. You could easily control the power supply to keep your inverter battery safe. For more amazing solar content, keep reading our blogs. 

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Olivia is committed to green energy and works to help ensure our planet's long-term habitability. She takes part in environmental conservation by recycling and avoiding single-use plastic.

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