Can I charge the solar battery with a regular charger?

By Matt •  Updated: 05/03/21 •  5 min read

Some solar batteries come with the duel charging facility. You can charge them under direct sunlight. Alternatively, connect your regular USB charger to charge the Solar Battery using the power grid. However, you should first check if the solar battery is compatible with the USB charger.

Use of battery charger for solar light batteries?

The weather is unpredictable through the sunlight in the region. We all know that the sunlight is not always the same throughout the year. There will be occasions when the sunlight is very low on a particular day. 

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The reason can be anything such as cloudy day, rainy season, thunderstorm, winter season, etc. Moreover, in some regions, the sun is hardly visible during the day. 

In such an environment, the solar light would not be possible to charge in the sunlight. 

The solar panel mounted on the solar light will not receive sufficient energy to move the electron. As a result, no charge for the batteries is provided. 

It is a good idea to have the back solar battery charger with you for emergency conditions. The solar battery charger comes with the power cable that you connect to the home power grid. 

Put the rechargeable batteries in it, and it will begin charging the solar batteries. The solar light battery charger is a handy tool that gives you instant service to charge your batteries. 

Charge the batteries of the solar power garden lights, outdoor lamps, indoor battery power lights, and other equipment that rely on solar panel charging. 

Charging AA and AAA size solar lights batteries are now possible using the battery charger. 

Charge the battery fully before you place the batteries back on the solar lights. The battery charger comes with an indicator that tells you when the battery is fully charged. 

When you see the indicator, switch off the power connection, and remove batteries from the charger. Do not keep the charging overnight. The overcharging could damage the batteries.

Can you charge a solar battery with a car battery charger?

Yes. It is possible to charge a solar battery with a car battery charger. Choose the battery charger that is compatible with your solar battery. The charging process is broken down to the battery chemistry. 

The lead-acid battery that aligns with the power charger will generate sufficient energy to charge the batteries. You will never face a compatibility issue with the lead-acid battery.

The charge parameters are the essential component of the battery charger. 

When it is compatible with the batteries, you can use any car charger to charge your solar batteries. Read the specification before you buy the car charger. 

The information will tell you what type of batteries the charger support. An automatic battery charger charges the battery and turns off the power supply once the battery is fully charged. 

Can you Charge batteries from the charger and solar at once?

Yes. You can charge the batteries from two different charging sources. Every battery comes with the max input capacity. When you connect the two energy sources to charge batteries, the battery uses both inputs. 

It performs the charging until the input reaches the max capacity. As soon as the max capacity is reached, the source will be limited from transferring more energy to avoid damage to the batteries. 

No matter how many charging sources you use to charge the battery, the typical battery uses its maximum capacity. 

Connecting more charging points would be beneficial for the batteries as it will charge the battery quickly. 

Solar energy usually is low in voltage. When you connect the solar batteries to the power grid, it will pump more energy to the batteries, and your batteries will be ready to use in few minutes. 

For example, suppose the solar batteries have a capacity of 30a Max charge when you connect two power sources. In that case, the battery will accept the power until it reaches the 30a max capacity and gets stable at this point. 

Now the battery will charge at its optimum capacity with high-speed charging. 

How do I charge my solar batteries fast?

The charging speed of the batteries depends on two factors, and one is the max capacity of the batteries to transfer the energy from the power source to the main component. 

Another factor is the voltage. When your battery is charged at the max voltage for few hours, the batteries will quickly charge. 

The solar batteries would not be possible to charge at the max capacity under direct sunlight due to a consistent shift in the energy received from the sun. 

Even during the afternoon, the sun rays are blocked by the cloud, which reduces the efficiency of the solar batteries. 

An alternative solution is to connect the batteries to the power grid. Some solar power batteries come with the duel charging facility. 

You can either charge your batteries under the sunlight or use the primary power grid to charge the batteries. Due to high voltage from the power grid, the battery will get charge quickly.


I’m Matt, a computer and electronic embedded system developer. Currently, working as an electronic engineer. In my leisure time, I do love to blog about technology stuff. Specially, new advance high tech devices. Portable solar systems are one of topic that I love to investigate. They are becoming more powerful day by day which keep me alert.