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 ensure you get the most bang for your buck)!
When choosing a battery (or batteries) for 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 kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Compare the elements of batteries, such as: depth of discharge, capacity and power, efficiency, battery life, and maker.
By the end of the article you will know exactly how to pick out the best battery to your solar panel system!
So let’s begin…
So the first decision to make is the sort of battery that will fit your system.
Lead Acid Batteries
Lead acid batteries are the most commonly used rechargeable battery in the world. They’re also among the longest-used and most dependable batteries in existence. When compared with the other batteries we’ll discuss in this report; they are the cheapest option but you exchange 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 simply making the move to a solar panel system, lead acid batteries may be a very good option. They’re the type of battery we use in the majority 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 industry and stay both somewhat untested and more difficult to come across. Of the three kinds of batteries, saltwater has the greatest 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. 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 battery is probably the highest rated, but also the most expensive. An example of a lithium ion battery is the Tesla Powerwall.
Part 2) Assess the components of batteries. As soon as you’ve picked 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 to your system.
Price is probably one of the more obvious elements. But the old saying,”you get what you pay for” holds true when purchasing batteries also. In some instances though, certain batteries could be overkill for your system so the most expensive battery might not be the best choice always.
Battery Life and Warranty
For many systems, a battery will cycle every day, meaning it will charge and drain regularly. With every cycle, the battery’s ability to hold the identical charge lessens slightly. So one component to consider is the guarantee 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 application, you can extend the life of your batteries.
Length of Discharge
Depth of discharge is how much you can drain the battery down 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 provides more battery power per charge than 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 given 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 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 efficacy compares the energy taken to charge a battery with the amount of energy that the charged battery generates.
This may not be a part most would consider, but it is something to pay attention to. As with other technologies, there are both trusted brands and start-up brands. A trusted brand comes with known flaws and benefits; a startup brand can perhaps have better technology, but could also have yet unknown technological difficulties. Based on your system needs, you may decide to go for a well-reviewed firm or one that is brand new to the market.