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 make certain you get the most bang for the buck)!
When choosing a battery (or batteries) to your solar panel system, there are three categories of batteries which work best. We will do this in 2 parts:
Part 1) Instantly compare the three main 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 out the ideal battery to 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.
Lead Acid Batteries
They are also one of the longest-used and most dependable batteries in existence. When compared with the other batteries we will discuss in this report; they are the cheapest option but you trade cost for some battery life and depth of discharge. But for homeowners needing lots of storage for a lower cost, or if you are just making the transfer to a solar panel system, lead acid batteries might be a very good option. They’re the type 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 greater lifespan. Unlike lead acid batteries, saltwater batteries are basically brand new to the market and remain both somewhat untested and more difficult to come across. Of the three kinds of batteries, saltwater has the greatest depth of discharge, which means 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 battery may be the highest rated, but also the most expensive. An example of a lithium battery is the Tesla Powerwall.
Part 2) Compare the components of batteries. Once you’ve chosen the best battery type for your 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 purchasing batteries as well. Sometimes though, certain batteries may be overkill for your system so the most expensive battery might not be the ideal choice always.
For most systems, a battery will cycle every day, meaning it is going to charge and drain regularly. With each cycle, the battery’s ability to hold the identical charge lessens slightly. So one 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
Depth of discharge is how much you can drain the battery before needing to recharge the battery without harming its life. Particular solar batteries may 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 than 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 many hours; a battery with low capacity and high power can operate a large system but only for a short time.
Efficiency is the amount of energy used compared to the quantity of energy it took to save said energy. Batteries require power to charge and efficacy compares the energy taken to control a battery together with the amount of energy which the charged battery generates.
This might not be a part most would consider, but it is something to pay attention to. Like other technologies, there are both trusted 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 issues. Based upon your system demands, you might decide to go with a well-reviewed company or one that is brand new to the market.