Nexus Battery Life Fix

How To Pick Out The Best Battery For a Solar Panel System, Battery Bank, or Off-Grid System

Or have you wondered what makes one deep cycle battery better 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 picking a battery (or batteries) to your solar panel system, there are three categories of batteries that work best.    We’ll do this in 2 parts:

Part 1)   Quickly compare the three chief types of solar batteries (lead acid, saltwater, and lithium).   And,

Part 2)   Compare 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 just how to pick the ideal battery to 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 are the most commonly used rechargeable battery in the world. They are also among the longest-used and most reliable batteries in existence.  Compared to the other batteries we’ll discuss in this report; they’re the cheapest option but you trade cost for some battery life and depth of discharge.  But for homeowners needing a great deal of storage for a lesser cost, or if you are just making the move 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 within 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 stay both somewhat untested and harder to come across.  Of the 3 kinds of batteries, saltwater has the greatest 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 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 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 components to research to find the ideal battery for your system.  

Cost

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.  In some instances 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 daily, meaning it will drain and charge regularly.  With each cycle, the battery’s ability to maintain the same charge lessens slightly.  So one component to consider is the warranty on the battery that guarantees a certain 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 damaging its life.  Particular solar batteries may be depleted farther 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 than a battery with less.

Ability 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 higher power can run a massive system for many hours; a battery with low capacity and high power can run a large system but only for a short time.

Efficiency

Efficiency is the amount of energy used compared to the amount 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 which the charged battery produces. 

Manufacturer

This may not be a component most would consider, but it is something to focus on.  Like other technology, there are both trusted brands and start-up brands.  A trusted brand includes known flaws and advantages; a startup brand can perhaps have better technology, but can also have yet unknown technological difficulties.  Depending upon your system demands, you may decide to go for a well-reviewed company or one that is brand new to the market.