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 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 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 will do this in 2 parts:
Part 1) Quickly compare the three chief types 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 end of this article you will know exactly how to pick the ideal battery for 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.
Lead Acid Batteries
They’re also among 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 trade price for some battery life and depth of discharge. But for homeowners needing a great deal of storage for a lesser cost, or whether you are just 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 greater lifespan. Contrary to lead acid batteries, saltwater batteries are basically brand new to the market and remain both somewhat untested and more difficult to come across. Of the 3 types of batteries, saltwater has the greatest depth of discharge, so 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 kinds of solar batteries. Comparing all three choices, the lithium battery may be the highest rated, but also the most expensive. A good example of a lithium battery is the Tesla Powerwall.
Part 2) Assess 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 explore to find the perfect battery to your system.
Cost is probably one of the more obvious elements. 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 many systems, a battery will cycle daily, meaning it will drain and charge regularly. With every 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 keep in mind that if 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 harming its life. Certain solar batteries may be depleted further than others, allowing for more use between charging. Essentially, a battery with a 90% depth of discharge per cycle will provide 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 store. Power is how much energy a battery can provide at a certain moment. A battery with both a high capacity and higher power can run a large system for many hours; a battery with low capacity and higher power can operate 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 save energy. Batteries require power to charge and efficacy compares the energy taken to control a battery with the amount of energy that the charged battery produces.
This might not be a part most would consider, but it is something to focus on. Like other technologies, 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 could also have yet unknown technological issues. Depending on your system demands, you may decide to go with a well-reviewed company or one that is brand new to the market.