With the ever-increasing electricity bills, many homeowners are now shifting to solar energy. If you want to have a reliable source of energy for your home, you should consider buying solar battery systems. These systems will store solar energy to ensure that you can use it consistently without going back to the grid. Here are factors that you should consider when buying solar batteries.
Capacity
Capacity is simply the total amount of electricity that can be stored by the solar battery and it is measured in kilowatt-hours (kWh). A majority of solar battery systems are designed to be stackable. This means that you can include additional batteries in your solar storage system in order to get extra capacity. You need to find a solar battery that has the best capacity to suit the energy needs of your home.
Power
When choosing a solar battery system, you need to consider its power rating. Power rating is basically the amount of electricity that a specific battery can deliver at one time and it is usually measured in kilowatts (kW). A battery that has a higher capacity and a low power rating will deliver a low amount of energy for a long period of time. Conversely, a battery that has low capacity and a higher power rating can efficiently run your entire home for a few hours.
Round-trip efficiency
The round-trip efficiency of a battery is the amount of energy that can be used, as a percentage of the amount of energy it took to store it. You need to choose professional batteries that have a higher round-trip efficiency if you want to reap maximum economic value from them. For example, if you feed your battery 5kWh of electricity and can only get 4kWh of usable electricity back, then this means that your battery has a round-trip efficiency of 80%.
Depth of discharge (DoD)
Solar batteries must retain some charge at all times, because of their chemical composition. If you use up 100% of the battery's charge, its lifespan will be significantly reduced. The depth of discharge (DoD) of a solar battery is the capacity of the battery that has been utilized. Most solar battery manufacturers will indicate the maximum DoD necessary for optimal performance. With a higher DoD, you will be able to use up morecapacity of the battery than with a smaller DoD. For example, a 10kWh solar battery with a DoD of 90% means that you should not use more than 9kWh of your battery without recharging it.
Battery life
Solar battery systems work just like your mobile phone battery that charges and drains daily. The ability of the battery to hold charge will decrease gradually with continued use. Solar batteries have a warranty that covers a certain number of cycles or years of usefulness. Since the battery performance naturally decreases over time, manufacturers tend to guarantee that their battery will keep a specified amount of its capacity over the warranty period. This means that your battery life will largely depend on the brand you purchase, and how much capacity it loses with time.
With the increasing demand for solar energy, well-established organizations and startups are now developing and producing solar battery products. Some tech startups may have cutting-edge technology but with a poor track record to prove the long-term functionality of their solar batteries. Make sure that you research different brands extensively to find a manufacturer that suits your solar storage needs.
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