Or have you wondered what makes one deep cycle battery greater than another? If so, this report will answer these questions and give you specific things to check on before purchasing your new battery (to make certain you get the most bang for the buck)!
When choosing a battery (or batteries) for your solar panel system, there are 3 categories of batteries that work best. We will do this in 2 parts:
Part 1) Quickly compare the three chief kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Assess the components of batteries, such as: depth of discharge, power and capacity, efficiency, battery life, and manufacturer.
By the conclusion of this article you will know just how to pick the best battery for your own solar panel system!
So let’s get started…
Part 1) The Three Best Types Of Batteries For Solar Panel Systems: The best type of battery for your solar panel system will be dependent on what you’re looking for. There are three battery types that work exceptionally well; however, each battery type has pros and cons. So the first decision to make is the type of battery that will fit your system.
They are also one of the longest-used and most reliable batteries in existence. Compared to the other batteries we will discuss in this report; they are the cheapest option but you exchange cost for some battery life and depth of discharge. But for homeowners needing a great deal of storage for a lower cost, or if you are just making the move to a solar panel system, lead acid batteries might be a very good option. They’re the sort of battery we use in most of the battery banks within our solar panel systems.
Saltwater batteries are more expensive than lead acid batteries, but also have a greater lifespan. Contrary to lead acid batteries, saltwater batteries are basically brand new to the market and stay both somewhat untested and harder to come across. Of the 3 types of batteries, saltwater has the greatest depth of discharge, so you’ll find the most output per charge before needing to recharge.
Lithium batteries are the most expensive and the longest lasting of the three types of solar batteries. Comparing all three choices, the lithium ion battery may be the highest rated, but also the most expensive. An example of a lithium ion battery is the Tesla Powerwall.
Part 2) Assess the components of batteries. Once you’ve chosen the best battery type for your own solar panel or off-grid system (that meets your system’s needs), there are elements to explore to find the perfect battery for your system.
Cost is probably one of the more obvious elements. But the old saying,”you get what you pay for” holds true when purchasing batteries as well. In some instances though, certain batteries may be overkill for your system so the most expensive battery might not be the best choice always.
Battery Life and Warranty
For most systems, a battery will cycle every day, meaning it is going to drain and charge regularly. With every cycle, the battery’s ability to hold the same charge lessens slightly. So 1 component to consider is the guarantee on the battery which guarantees a certain number of cycles of useful life. But keep in mind that when you use the maintenance and reconditioning methods we teach you at the EZ Battery Reconditioning program, you can extend the life of your batteries.
Depth of Discharge
Length of release is how much you can drain the battery down before needing to recharge the battery without damaging its life. Certain solar batteries may be depleted farther than others, allowing for more use between charging. Basically, a battery with a 90% depth of discharge per cycle provides more battery power per charge compared to a battery with less.
Capacity and Power
Measured in kilowatt hours (kWh), capacity is the amount of energy a battery can store over time. The more capacity a battery has, the more power it can save. Power is how much energy that a battery can provide at a certain moment. A battery with a high capacity and high power can run a large system for many hours; a battery with low capacity and high power can run a large system but just for a short time.
Efficiency is the amount of energy used compared to the amount of energy it took to save energy. Batteries require power to control and efficiency compares the energy taken to control a battery with the amount of energy that the charged battery generates.
This may not be a component most would consider, but it’s something to focus on. Like other technologies, there are both trusted brands and start-up brands. A trusted brand includes known defects and benefits; a startup brand can perhaps have better technology, but can also have yet unknown technological difficulties. Based upon your system demands, you might decide to go for a well-reviewed company or one that is brand new to the market.