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 buying 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 chief kinds of solar batteries (lead acid, saltwater, and lithium). And,
Part 2) Assess the elements 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 best battery to your solar panel system!
So let’s get started…
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. So the first decision to make is the sort of battery that will fit your system.
Lead acid batteries are the most commonly used rechargeable battery in the world. They’re also one of the longest-used and most dependable batteries in existence. Compared to the other batteries we will discuss in this report; they’re the cheapest option but you trade price for some battery life and depth of discharge. But for homeowners needing lots of storage for a lower price, 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 in our solar panel systems.
Saltwater batteries are more expensive than lead acid batteries, but also have a greater lifespan. Unlike 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 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. Comparing all three options, the lithium 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 elements of batteries. As soon as 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 explore to find the perfect battery for 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 also. Sometimes 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 most systems, a battery will cycle daily, meaning it will charge and drain regularly. With every cycle, the battery’s ability to maintain the identical charge lessens slightly. So 1 component to consider is the guarantee on the battery that 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 at 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 down before needing to recharge the battery without harming its life. Certain solar batteries may be depleted farther 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 than a battery with less.
Capacity and Power
Measured in kilowatt hours (kWh), capacity is the amount of energy a battery can store over time. 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 both a high capacity and higher power can run a massive system for many hours; a battery with low capacity and high power can operate a large system but just for a brief time.
Efficiency is the amount of energy used compared to the quantity of energy it took to store energy. Batteries require power to control and efficiency compares the energy taken to control a battery together with the amount of energy which the charged battery produces. The higher the efficiency, the more cost-effective the battery.
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 includes known flaws and benefits; a start-up brand can perhaps have better technology, but can also have unknown technological issues. Based on your system needs, you may decide to go for a well-reviewed company or one that is brand new to the market.