Or have you wondered what makes one deep cycle battery better than another? If so, this report will answer these questions and provide you specific things to check on before buying your new battery (to ensure you get the most bang for your buck)!
When picking a battery (or batteries) to your solar panel system, there are three categories of batteries that work best. We’ll do this in two parts:
Part 1) Instantly compare the three main types of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Compare the elements of batteries, such as: depth of discharge, power and capacity, efficiency, battery life, and maker.
By the conclusion of the article you will know just how to pick out the best battery to your 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.
Lead Acid Batteries
They are also one of the longest-used and most dependable batteries in existence. Compared to the other batteries we’ll discuss in this report; they’re the cheapest option but you trade cost for some battery life and depth of discharge. But for homeowners needing a great deal of storage for a lesser price, or if you are just making the move to a solar panel system, lead acid batteries may 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 better lifespan. Contrary to lead acid batteries, saltwater batteries are essentially brand new to the market and remain 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 get 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. 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 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. As soon as you’ve chosen 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 ideal 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 every day, meaning it is going to drain and charge regularly. With each cycle, the battery’s ability to hold the identical charge lessens slightly. So one component to consider is the warranty on the battery which guarantees a specific 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
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 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 compared to a battery with less.
Ability 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 a high capacity and higher power can run a massive system for several hours; a battery with low capacity and high power can run a large system but only for a short time.
Efficiency is the amount of energy used compared to the amount of energy it took to store energy. Batteries require power to charge and efficiency compares the energy taken to control a battery together with the amount of energy that the charged battery generates.
This may not be a component most would consider, but it is something to focus on. Like other technology, there are both reputable brands and startup brands. A trusted brand includes known defects and benefits; a startup brand can perhaps have better technology, but can also have unknown technological difficulties. Based on your system demands, you may decide to go with a well-reviewed company or one that is brand new to the market.