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How to Choose Solar Storage Batteries 2018-02-08

Energy Battery Storage : The Next Breakthrough in the Power Industry

Choose solar storage batteries, the first and most important step is learn the detail like the battery’s capacity & power ratings, depth of discharge (DoD), battery life, and manufactures.


Capacity and power of solar batteries

Capacity, measured in kilowatt-hours (kWh), is the electricity that a solar battery can store. Most home solar batteries are designed to be stacked batteries, that is, we can put many batteries with your solar storage system to get extra capacity.

Capacity tells us how big our battery is, instead of how much electricity a battery can provide at a given moment. Generally, we need to consider the battery’s power rating. For solar batteries, a power rating is the amount of electricity that a battery can deliver at one time. It is measured in kilowatts (kW).

We should know that a battery with a high capacity and a low power rating would deliver a low amount of electricity, so it takes for a long time to discharge. A battery with low capacity and a high power rating could operate in your entire home, but only for a few hours.

Depth of discharge (DoD) of solar batteries

Due to their chemical composition, most solar batteries need to retain some charge at all times. If we use 100 percent of a battery’s charge, its useful life will be significantly shortened.

The depth of discharge (DoD) of a battery is the amount of a battery’s capacity that has been used. Most manufacturers will specify a maximum DoD for optimal performance. For example, if a 10 kWh battery has a DoD of 90 percent, you shouldn’t use more than 9 kWh of the battery before recharging it. Generally speaking, a higher DoD means you will be able to utilize more of your battery’s capacity.

Round-trip efficiency of solar batteries

A battery’s round-trip efficiency represents the amount of energy that can be used as the amount of energy that it took to store it. For insurance, if you charge 10  kWh of electricity into your battery and can only get 9 kWh of useful electricity back, therefore, the battery has 90 % round-trip efficiency (4 kWh / 5 kWh = 90%). A higher round-trip efficiency means you will get more economic value out of our solar battery.

Solar battery life

For most uses of home energy storage, our battery will charge and drain every day. The battery’s ability to hold a charge will decrease gradually when using. In this way, solar batteries are like the battery in our mobile phone, we charge it each night to use, so as our phone gets older we’ll find that the battery isn’t holding as much of a charge as it did when it was new.

Solar Batteries Manufacturer

On the one hand, a major automotive company entering the energy storage market maybe has a longer history of product manufacturing, they may develops traditionally, they will choose AGM batteries as the material. While Lithium Batteries the main trend to develop. Instead, a tech company may have a brand-new and high-performing technology, KOK POWER are the startup you should choose, we admit that we are not so famous, but we are develops in the consideration of all our customers, KOK POWER can supply the benefits others can not, we can custom any solar batteries for you, we can build a distributorship with you, brand your product and design the logo for you, the most important is that we can give you the most competitive price better than those brands batteries. We make sure that the quality you deserve.


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