The principal benefit of lithium ion batteries is their ability to store large amounts of energy in a relatively small space. Lithium ion batteries have the added benefit of having an extremely high depth of discharge compared to lead acid batteries. This is why lithium ion batteries are generally the only type of battery to use for energy storage.
For energy storage applications, nominal voltages of 12, 24, and 48 are used. This generally means that the batteries in the energy storage system will generally be in either a 3S(4S for LFP), 7S, or 13S series configuration. Energy storage batteries generally have an amp hour rating of 100 ah or more, but smaller energy storage batteries can be made.
Articles in this category will revolve around long term energy storage, electrical preparation techniques, high capacity battery packs, and various series and parallel battery configurations.
Can you spot weld copper?
When dealing with large current battery packs sometimes nickel isn't feasible to use. Running 3 or more layers of nickel introduces complexity, weight, and more points of failure. Luckily you can spot-weld copper, you just need to have a really good spot welder and some tips we go over in this article.
How to Increase 12 volts to 24 volts
A lot of times when building a battery pack you may have some devices that run directly off the pack and some that need a voltage boost. We go over ways to boost 12v up to 24v so you can run 24v devices off your 12v pack. Sometimes certain things run even better off 24v compared to 12v for instance most UDB-C PD boards.
Converting Watt Hours to Amp hours
Battery pack capacity is measured in either watt-hours or amp-hours. Some people prefer to use Wh while others prefer to use Ah. If you have a pack that is in Wh it's important to know how to take Wh and convert it to Ah, the good news is it's just a simple formula which we go into depth on here.
How Do You Check Internal Resistance With A Multimeter?
If you only have a handful of cells or packs to test learning how to test IR with a multimeter can come in handy. It's a pretty straightforward and simple process to do so. However, if you need to test in large quantities we highly recommend buying a dedicated IR tester.
Which Battery Chemistry Is Best?
The two main lithium chemistries of choice are NMC and LFP. Determining which is best really comes down to what your application is. In this article, we go over which is best in our opinion and in what application each excels at.
What is a 38120 Battery
38120 Cells known as Headway cells are known for there extremely high levels of current carrying capacity as well as their ease of use. It's common to see these used in car audio systems and golf carts where current demand is high. Learn more about these awesome cells in this article!
What Is The Minimum & Maximum Voltage Range For 18650?
Understanding the voltage range of a 18650 cell is crucial in learning how to build battery packs. Since lithium batteries have a rather wide working voltage range this is increased when putting multiples of cells in series. Having a good understanding of this working voltage range will help figure out the working voltage rang of a battery pack.
How Many 18650 Batteries Do I Need to Make 12V?
With an abundance of cheap 12v inverters people will often try to figure out how to build a 12v 18650 pack to power these devices. Most commonly people will turn to 3s which is actually not ideal. We go over all the different options in this article to help you make the best choice for your build.
Why There Is More To Capacity Than Amp Hours
The capacity of a battery or cell is measured by two main standards amp hours and watt hours. When trying to figure out the true capacity one measure is more accurate to use than the other. Why is that the case? We will go over that in this article and explain the main differences.