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 choosing a battery (or batteries) to your solar panel system, there are 3 categories of batteries that work best. We will do this in two parts:
Part 1) Quickly compare the three chief types 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 manufacturer.
By the end of the article you will know just how to pick the ideal battery for 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’re also one of the longest-used and most dependable batteries in existence. Compared to 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 just making the transfer to a solar panel system, lead acid batteries might 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 market and remain both somewhat untested and harder to come across. Of the three kinds of batteries, saltwater has the greatest depth of discharge, so 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. Comparing all three options, the lithium ion battery is probably the highest rated, but also the most expensive. An example of a lithium 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 elements to research to find the perfect battery for your system.
Price is probably one of the more obvious components. But the old saying,”you get what you pay for” holds true when buying batteries as well. In some instances though, certain batteries may be overkill for your system so the most expensive battery might not be the ideal choice always.
Battery Life and Warranty
For many systems, a battery will cycle daily, meaning it is going to drain and charge regularly. With each cycle, the battery’s ability to hold the same charge lessens slightly. So one component to consider is the guarantee on the battery which 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 program, 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 damaging its life. Certain 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 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 save. 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 several hours; a battery with low capacity and higher power can operate a large system but only for a brief time.
Efficiency is the amount of energy used compared to the quantity of energy it took to store said energy. Batteries require power to charge and efficiency compares the energy taken to control a battery together with the amount of energy that the charged battery produces. The higher the efficiency, the more cost-effective the battery.
This might not be a component most would consider, but it’s something to focus on. As with other technologies, there are both trusted brands and start-up 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. Based upon your system demands, you may decide to go with a well-reviewed company or one that is brand new to the market.