Or have you wondered what makes one deep cycle battery greater than another? If so, this report 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) for your solar panel system, there are 3 categories of batteries that work best. We will do this in two parts:
Part 1) Instantly compare the three main kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Assess 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 just how to pick the ideal battery to your own 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 depend on what you’re looking for. So the first decision to make is the type of battery that will fit your system.
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 cost for some battery life and depth of discharge. But for homeowners needing a great deal of storage for a lower cost, or if you are just making the move to a solar panel system, lead acid batteries might 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 greater 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 types of batteries, saltwater has the best depth of discharge, which means 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 ion 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. Once you’ve chosen the best battery type for your own solar panel or off-grid system (that meets your system’s needs), there are elements to research to find the ideal 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. Sometimes though, certain batteries could be overkill for your system so the most expensive battery might not be the best choice always.
For many systems, a battery will cycle every day, meaning it is going to drain and charge regularly. With every cycle, the battery’s ability to maintain the same charge lessens slightly. So 1 component to consider is the warranty on the battery which guarantees a specific number of cycles of useful life. But bear 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.
Length of Discharge
Length of release is how much you can drain the battery before needing to recharge the battery without harming its life. Particular solar batteries can 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 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 that a battery can provide at a certain moment. A battery with both a high capacity and higher power can run a large system for several hours; a battery with low capacity and higher power can run a large system but only for a brief time.
Efficiency is the amount of energy used compared to the amount of energy it took to save said energy. Batteries require power to charge and efficacy compares the energy taken to charge a battery with the amount of energy which the charged battery generates. The higher the efficiency, the more cost-effective the battery.
This may not be a component most would consider, but it is something to pay attention to. Like other technology, there are both reputable brands and start-up brands. A trusted brand includes known flaws and advantages; a start-up brand can perhaps have better technology, but could also have yet unknown technological difficulties. Based upon your system needs, you may decide to go with a well-reviewed firm or one that is brand new to the market.