Nexus 5 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 greater than another?  If so, this article 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 3 categories of batteries that work best.    We will do this in 2 parts:

Part 1)   Quickly 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 conclusion of this article you will know just how to pick out the best battery to your 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 be dependent on what you’re looking for. 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 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 whether you are just making the transfer to a solar panel system, lead acid batteries may be a very good option.  They’re the sort of battery we use in the majority 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 essentially brand new to the market and remain both somewhat untested and harder to come across.  Of the 3 types of batteries, saltwater has the greatest depth of discharge, which means 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 options, the lithium ion battery may be the highest rated, but also the most expensive.  A good example of a lithium battery is the Tesla Powerwall.

Part 2) Assess the elements 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 explore to find the ideal battery for your system.  

Cost

Cost is probably one of the more obvious components.  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 may not be the best choice always.

For most systems, a battery will cycle every day, 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 warranty on the battery which guarantees a specific number of cycles of useful life.  But bear in mind that when 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.  Certain 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 compared to a battery with less.

Capacity 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 several hours; a battery with low capacity and high power can run a large system but just for a short time.

Efficiency

Efficiency is the amount of energy used compared to the amount of energy it took to save said energy.  Batteries require power to control and efficiency compares the energy taken to control a battery together with the amount of energy that the charged battery generates. 

Manufacturer

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