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 buying your new battery (to ensure you get the most bang for your buck)!
When choosing a battery (or batteries) for your solar panel system, there are 3 categories of batteries which work best. We’ll do this in 2 parts:
Part 1) Quickly compare the three main kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Compare the components of batteries, such as: depth of discharge, power and capacity, efficiency, battery life, and maker.
By the conclusion of this article you will know just how to pick out the best battery to your solar panel system!
So let’s begin…
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 sort of battery that will fit your system.
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’re the cheapest option but you trade price for some battery life and depth of discharge. But for homeowners needing a great deal of storage for a lower cost, or whether you are just making the transfer to a solar panel system, lead acid batteries might be an excellent option. They’re the sort of battery we use in the majority of the battery banks within 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 basically brand new to the market and stay both somewhat untested and more difficult to come across. Of the three types of batteries, saltwater has the greatest depth of discharge, which means 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 kinds of solar batteries. Their depth of discharge is less than that of a saltwater battery, but more than that of a lead acid battery. Comparing all three options, the lithium ion battery may be the highest rated, but also the most expensive. An example of a lithium battery is the Tesla Powerwall.
Part 2) Assess the components of batteries. As soon as you’ve chosen the best battery type for your solar panel or off-grid system (that meets your system’s needs), there are components to research to find the ideal battery for your system.
Price 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. In some instances though, certain batteries could be overkill for your system so the most expensive battery may not be the ideal choice always.
For most systems, a battery will cycle daily, meaning it will charge and drain regularly. With every cycle, the battery’s ability to maintain the identical charge lessens slightly. So 1 component to consider is the guarantee on the battery that guarantees a specific number of cycles of useful life. But keep in mind that when you use the maintenance and reconditioning methods we teach you in the EZ Battery Reconditioning application, 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 can be depleted farther than others, allowing for more use between charging. Basically, a battery with a 90% depth of discharge per cycle will provide more battery power per charge than a battery with less.
Ability and Power
The more capacity a battery has, the more power it can save. Power is how much energy that a battery can provide at a given moment. A battery with both a high capacity and high power can run a large system for many hours; a battery with low capacity and higher power can operate a large system but just for a brief time.
Efficiency is the amount of energy used compared to the quantity of energy it took to save energy. Batteries require power to charge and efficacy compares the energy taken to charge a battery with the amount of energy that the charged battery produces.
This might not be a part 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 flaws and advantages; a start-up brand can perhaps have better technology, but can also have unknown technological issues. Depending on your system demands, you might decide to go with a well-reviewed firm or one that is brand new to the market.