Or have you wondered what makes one deep cycle battery better than another? If so, this article will answer these questions and provide you specific things to check on before purchasing 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 3 categories of batteries that work best. We’ll do this in 2 parts:
Part 1) Instantly compare the three chief kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Assess the components of batteries, such as: depth of discharge, capacity and power, efficiency, battery life, and maker.
By the conclusion of this article you will know just how to pick the ideal battery for your own solar panel system!
So let’s get started…
So the first decision to make is the type of battery that will fit your system.
Lead Acid Batteries
Lead acid batteries are the most commonly used rechargeable battery in the world. They are also one of the longest-used and most reliable batteries in existence. When compared with the other batteries we will discuss in this report; they’re the cheapest option but you exchange cost for some battery life and depth of discharge. But for homeowners needing lots 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 most 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 basically brand new to the industry and stay both somewhat untested and harder to come across. Of the three types of batteries, saltwater has the best depth of discharge, so you’ll find 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. Comparing all three choices, the lithium ion battery is probably the highest rated, but also the most expensive. A good example of a lithium battery is the Tesla Powerwall.
Part 2) Compare the elements 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 perfect 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 buying batteries as well. Sometimes though, certain batteries may be overkill for your system so the most expensive battery might not be the best choice always.
Battery Life and Warranty
For most systems, a battery will cycle every day, meaning it will drain and charge regularly. With every cycle, the battery’s ability to hold the same charge lessens slightly. So 1 component to consider is the warranty on the battery that guarantees a certain 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 application, you can extend the life of your batteries.
Length of Discharge
Depth of discharge is how much you can drain the battery before needing to recharge the battery without damaging its life. Particular 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.
Capacity 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 high 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 save energy. Batteries require power to charge and efficacy compares the energy taken to control a battery with the amount of energy which 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 reputable brands and start-up brands. A trusted brand includes known flaws and advantages; a startup brand can perhaps have better technology, but could also have unknown technological issues. Based upon your system needs, you may decide to go with a well-reviewed company or one that is brand new to the market.