How to Choose Batteries For Storing Solar Electricity?

Are you shopping for a solar battery storage system? These reliable systems provide electricity to homeowners when coping with power outages caused by windstorms, wildfires, and other extreme weather conditions.

California residents stand to gain a lot from investing in such storage systems due to the frequent blackouts and wildfire hazards in this area. Having a backup system means your power will stay on in times when the grid is down.

The following tips will help you choose the right solar batteries for your home.

Consider the power rating

When shopping for solar batteries, the initial factor to consider should be their power rating, referring to the kW they provide. The power rating of these devices informs homeowners about the number of appliances they can power at the same time. Power is mainly expressed in kilowatts, but it might also be expressed in Amps.

There are two power ratings to take into consideration when choosing solar batteries, a continuous and instantaneous rating. The latter is capable of providing more electricity in short bursts. This kind of five-minute rating is of tremendous importance to homeowners having a sump pump, which requires plenty of electricity to turn on, but it later functions at lower power.

Check the size (capacity) of the units

The following aspect to take into account is the size or capacity of solar batteries, referring to the electricity amount these devices are able to store and later supply to homes. There are various Solar Battery Sacramento providers working with residential and commercial clients. Unlike power, which is expressed in kilowatts, the size of these devices is indicated in kilowatt-hours, a unit that multiplies power by time.

The storage capacity of a solar battery provides information on how long it takes for it to power parts of your house. The usable capacity of these devices is the one that matters, as it indicates the stored electricity amount to be accessed when necessary.

The charge of solar batteries lasts in accordance with the amount of power output. If you are only powering several appliances at the same time, they can keep running for a longer time. Conversely, if the appliances use more power, they will run out of stored electricity faster.

Let’s take the difference between an AC unit and a light bulb as an example. A solar battery of 10 kw/h can run your air-conditioning unit no longer than two hours. The same model is capable of keeping twenty lightbulbs on for two days. Homeowners need to decide on the number of batteries they require to power their homes, which depends on the intended use of their energy storage systems.

Homeowners in Sacramento are supposed to answer several questions in order to determine the right number of necessary devices, such as how long they plan to stay battery-powered, what appliances they wish to keep functioning, etc. You are supposed to do the math prior to investing in such devices. Find out how to size your off-grid solar batteries.

Consider the roundtrip efficiency


Another aspect to factor in is roundtrip efficiency. This metric is responsible for measuring the capacity of energy storage systems to convert and store electricity. Any type of electrical process involves certain losses, meaning you will lose certain kWh of electricity by inverting direct current to alternating current electricity.

The same occurs when electricity is stored in a battery and then taken out. Consequently, the roundtrip efficiency of solar batteries informs you about the number of electricity units you will receive out of these devices for every electricity unit you put into it.

Don’t forget the battery lifetime

The lifetime of these devices is another aspect worth your attention. Three metrics are taken into account when measuring the lifespan of these units, including the expected cycles, throughput, and years of operation. Throughput allows homeowners in Sacramento to compare the electricity amount that moves through the battery over its lifespan. In contrast, cycles measure the number of times you can charge and discharge it.

The easiest way to convert the expected throughput into a lifespan is by dividing the kWh by the usable capacity of the device and estimating the number of full cycles you will receive. Afterward, the full cycle number is divided by 365, the number of days in a year. See this URL,, to gain a better insight into kilowatt-hours.

Check the chemistry

The following aspect to check is the chemistry of solar batteries. Such chemistry refers to the essential component used for storing electricity inside these units. It’s a characteristic of incredible importance, as it determines most of the other features. For instance, lithium-ion chemistries are more power-dense, meaning they are able to store electricity in smaller space amounts.

In addition, such power density indicates they are better at cycling, which enables optimal performance for longer time periods. Apart from lithium-ion chemistries, there are lead-acid, vanadium-flow, and other chemistries as well.

Consider safety

Safety is of great importance, as these devices are expected to meet given safety requirements to be certified for home and business installation. You are encouraged to check whether the model you purchase meets the safety requirements imposed by the government. Unless it does, you shouldn’t invest in such a solution.

To sum up

These storage systems provide homeowners with control during times of uncertainty.

They are reliable, cost-effective, safe, and highly efficient!