What kind of batteries do you use for solar lights?

By Matt •  Updated: 05/24/21 •  7 min read

Most of the solar lights have rechargeable batteries. NiCad (Nickel Cadmium) Batteries, Lead-Acid Battery, NiMH (Nickel Metal Hydride), Li-Ion (Lithium-Ion) Battery, LiFePO4 (Lithium-Ion Phosphate) Battery are the type of batteries you will find in the solar lights.

Do you need special batteries for solar lights?

The solar lights system comes with the solar cells panel and the solar lights. The system is connected to the rechargeable batteries. 

Solar Inverter
Solar Inverter

Throughout the day battery converts the solar energy into electrical energy, and generated power is stored in the batteries. As the day end, the solar lights get activated automatically and light up the garden. 

All the solar garden lights are of low-capacity rechargeable batteries. These are mostly made of the LED lights that consume less power. 

LEDs are highly efficient when it comes to producing bright light at the lowest energy capacity. 

In a modern solar light system, the 1.2V NiMH (Nickel Metal Hydride) batteries are used. These batteries are highly effective in storing energy generated from solar cells.

The efficiency of the solar batteries in powering the solar lights

All the batteries found in the solar lights system are run on a similar outcome. The primary purpose of these batteries is to store the energy generated from the solar panel system and allow the solar light to use the stored energy at night to light up the garden premises. 

These lights are highly effective in emitting bright lights. 

Solar batteries are made of different components and materials. The efficiency of the solar power batteries depends on the type of raw material used in the manufacturing. 

The various component produces different types of energy output. Check the rating of the batteries, the depletion rate, and the storage capacity to compare the batteries and find a suitable option for your solar light system.

The battery should have sufficient storage capacity to sustain itself throughout the night. It should power the entire solar light system at maximum efficiency and produce bright enough lights when required. 

You may have to calculate the output of each light and combine them to know the maximum storage required to run the whole system. 

Based on the calculation, choose the correct battery type to power the system.

Can you use Energizer rechargeable batteries in solar lights?

Yes. You can use the Energizer solar rechargeable batteries. These types of batteries come pre-charge from the factory. The manufacturer of the battery charges them before placing them in the store for sale. 

You can put them in the solar lights, and they will start illuminating the lights. You do not have to charge them before use. 

The batteries are packed in a set of 4 pieces in a single package. In most cases, the NiMH (Nickel-Metal Hydride) is used in the solar light system. The battery operates well in cold climates. 

Also, it can sustain in the high temperature without losing its efficiency. 

Therefore, you may need a pack of additional batteries in the backup supply to power your solar lights during the winter when sun exposure is limited.

What is the capacity of the energizer rechargeable batteries in the solar lights?

The energizer solar batteries are made of 2000mAh capacity. The battery capacity is similar to the other batteries found in the market. When the batteries are connected to the solar panels, they will have sufficient charges for illuminating the solar lights for around 10 to 12 hours. 

However, the outcome of the solar batteries depends on the number of solar lights connected to the single batteries. 

Calculating the total voltage required for each solar light and the power depletion rate of the batteries would give you the exact duration the batteries will last. 

LED lights are very efficient in consuming power. They are very bright and required very little energy to power the solar light system. 

Therefore, the full charge batteries would sustain for a long period without needing to recharge again. 

Energizer Battery Charger

How to select the energizer rechargeable batteries?

When selecting the rechargeable batteries for the solar lights, you have to consider the charging rate and storage capacity. The rechargeable batteries have a limited life. 

Check the manufacturer details to find the average lifespan of the battery to ensure that it will sustain longer. 

In most of the case, the rechargeable batteries can charge up to 1000 times. You can fully charge the battery and use it for several years without needing to replace it. 

Once the battery is fully charged, you can store the energy for up to 12 months or more, depending on the surrounding temperature and storing place. 

Good Choice To buy

When the batteries are kept in perfect condition, the charge may last for several years without recharging them.

What type of batteries used in the solar lights?

Before you start using the solar lights system to light up your garden or outdoor premises, you have to ensure that the batteries used in the system are efficient. It should offer support to the whole system without any damage to the solar lights and the batteries. 

The performance of the solar lights is highly reliant on the storage capacity of the batteries. The solar cells must generate sufficient power to store them in the rechargeable battery. 

Here are the different types of rechargeable batteries used in the solar lights system. 

1) Lead Acid Battery and SMF:

Lead-acid batteries are most popular in the solar-powered system. Compare to the other solar-powered batteries, and the lead-acid batteries are comparatively less expensive. 

They are highly affordable and can serve the purpose with high efficiency. 

Additionally, the lead-acid battery is highly affordable comparing to the other technology found in the battery. The only negative aspects of lead-acid batteries are they require regular maintenance. 

They are at high risk of explosion and may cause damage to the environment. In extreme weather conditions, they are susceptible and may cause damage to the equipment connected to it.

The Lead-acid batteries can last for 2 to 3 years. If you use the lead-acid battery to power the solar lights, they may require a large solar panel to generate the high voltage current to power the batteries. 

The bigger size may require more space to store, which may cause inconvenience for many people. Solar panels must produce a minimum of 12V to charge the battery. It means during cloudy days, and the battery may not be highly efficient. It will be difficult to charge the battery during winter or cloudy days.

2) Lithium-Ion Battery:

Comparatively, the Lithium-Ion Battery or Lithium-Ion Postpate is way better than the lead-acid battery. The price and efficiency of the battery make it useful when it comes to powering solar-powered devices. 

You can charge the batteries with the 3.7 V power supply. The small-size solar panel will also work the best when it comes to powering the batteries.

The modern Lithium-Ion Battery such as LiFePO4 is highly efficient and can be charged even on cloudy days—no need to spend more time on maintenance or a special type of safety ventilation like lead acid batteries. The whole system works autonomously. 

The average lifespan of the battery will be around 5 to 6 years. The only flaw in the battery is they react to the change in temperature. 

The high and low temperatures may reduce the efficiency of the battery. Therefore, you have to assemble these batteries in the moderated temperature room to avoid any damage to the system. 


Choose the batteries based on the output and the type of solar lights you use to illuminate the garden. 

The capacity and the performance rating are some of the key factors you have to consider while choosing the battery type research before buying the battery to ensure that it is highly effective for your current solar light system.


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.