Or have you wondered what makes one deep cycle battery greater than another? If so, this article will answer these questions and provide you specific things to check on before purchasing your new battery (to ensure you get the most bang for the buck)!
When picking a battery (or batteries) for your solar panel system, there are 3 categories of batteries which work best. We’ll do this in two parts:
Part 1) Quickly compare the three chief kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Assess the elements of batteries, such as: depth of discharge, power and capacity, efficiency, battery life, and maker.
By the end of the article you will know just how to pick out the best battery for your solar panel system!
So let’s get started…
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 sort of battery that will fit your system.
Lead acid batteries are the most commonly used rechargeable battery in the world. They are also among the longest-used and most dependable 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 price, or if you are simply making the move to a solar panel system, lead acid batteries might be an excellent option. They’re the type of battery we use in most of the battery banks in our solar panel systems.
Saltwater batteries are more expensive than lead acid batteries, but also have a better lifespan. Contrary to lead acid batteries, saltwater batteries are essentially brand new to the market and stay both somewhat untested and harder to come across. Of the 3 kinds of batteries, saltwater has the best depth of discharge, so you’ll get the most output per fee before needing to recharge.
Lithium batteries are the most expensive and the longest lasting of the three kinds of solar batteries. Comparing all three options, the lithium ion battery is probably the highest rated, but also the most expensive. An example of a lithium battery is the Tesla Powerwall.
Part 2) Compare the components of batteries. Once you’ve picked the best battery type for your own solar panel or off-grid system (that meets your system’s needs), there are components to research to find the perfect battery for your system.
Cost is probably one of the more obvious components. But the old saying,”you get what you pay for” holds true when buying batteries as well. Sometimes though, certain batteries may be overkill for your system so the most expensive battery may not be the best choice always.
Battery Life and Warranty
For most systems, a battery will cycle daily, meaning it is going to drain and charge regularly. With each cycle, the battery’s ability to hold the same charge lessens slightly. So 1 component to consider is the warranty on the battery that guarantees a certain number of cycles of useful life. But bear in mind that when you use the maintenance and reconditioning methods we teach you in the EZ Battery Reconditioning program, you can extend the life of your batteries.
Depth of Discharge
Depth of discharge is how much you can drain the battery before needing to recharge the battery without damaging its life. Certain solar batteries may be depleted further 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 than a battery with less.
Capacity and Power
The more capacity a battery has, the more power it can save. Power is how much energy a battery can provide at a certain moment. A battery with both a high capacity and high power can run a massive system for several hours; a battery with low capacity and high power can operate a large system but just for a brief time.
Efficiency is the amount of energy used compared to the amount of energy it took to store said energy. Batteries require power to control and efficacy compares the energy taken to charge a battery with the amount of energy that the charged battery generates.
This might not be a component most would consider, but it is something to focus on. As with other technology, there are both reputable brands and startup brands. A trusted brand includes known defects and advantages; a start-up brand can perhaps have better technology, but can also have unknown technological issues. Based upon your system demands, you may decide to go with a well-reviewed company or one that is brand new to the market.