Have you ever wondered how to pick out the best battery(s) to your solar panel system (or off-grid energy system)? Or have you wondered what makes one deep cycle battery better than another? If so, this report will answer these questions and give you specific things to check on before buying your new battery (to make certain you get the most bang for your buck)!
When picking a battery (or batteries) for your solar panel system, there are 3 categories of batteries that work best. We’ll do this in two parts:
Part 1) Instantly compare the three chief kinds 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 end of this article you will know exactly how to pick the best battery to your own solar panel system!
So let’s begin…
So the first decision to make is the sort of battery that will fit your system.
They are also one of the longest-used and most dependable batteries in existence. When compared with 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 transfer to a solar panel system, lead acid batteries may 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 industry and stay both somewhat untested and more difficult to come across. Of the 3 kinds 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 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 choices, the lithium battery may be the highest rated, but also the most expensive. A good example of a lithium ion battery is the Tesla Powerwall.
Part 2) Compare the elements of batteries. As soon as you’ve picked 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 ideal battery to your system.
Price is probably one of the more obvious components. But the old saying,”you get what you pay for” holds true when purchasing batteries also. Sometimes though, certain batteries could 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 charge and drain regularly. With each cycle, the battery’s ability to hold the identical charge lessens slightly. So one component to consider is the guarantee on the battery which guarantees a specific number of cycles of useful life. But keep in mind that if 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
Depth of discharge is how much you can drain the battery 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 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 store. Power is how much energy a battery can provide at a given moment. A battery with 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 amount of energy it took to store energy. Batteries require power to charge and efficiency compares the energy taken to charge a battery together with the amount of energy that the charged battery produces.
This may not be a part most would consider, but it’s something to pay attention to. Like other technology, there are both trusted brands and startup brands. A trusted brand includes known defects and benefits; a startup brand can perhaps have better technology, but could also have unknown technological issues. Based on your system needs, you may decide to go with a well-reviewed company or one that is brand new to the market.