Batteries

Batteries

In this section we're mostly going to be concerned with individual batteries, their subcomponents, and how to combine them in various ways, along with some common DIY projects and methodologies, but this will not be an exhaustive review of how to build batteries from scratch.

Commercial Of the Shelf (COTS) Batteries

There are basically two types of COTS batteries. Either they are complete batteries in whatever voltage, usually 12v, 24v, 48v, or they are sold as individual batteries as subcomponents that can be assembled to produce a complete battery. The batteries can always be combined in series or parallel, potentially with some restrictions depending on the internal construction, to produce a larger battery or battery system to meet particular application goals.

Series and Parallel

Batteries can be combined in series and parallel just list solar panels. Similarly, when connected in series, the voltages add up, and when connected in parallel, the voltage stays the same but the current capacity adds up. thereby leading the a greater capacity often described in terms of amp hours.

Do It Yourself (DIY) from Individual Battery Components

The other way to purchase COTS batteries is to buy individual components and then assemble them into custom systems. There is a whole hobbyist market in both new and used components and assembled batteries which can be re-used and re-purposed for all kinds of applications. For example, you can take the battery pack out of an EV and re-purpose it either in an EV conversion of existing ICE car, or use it as storage for a home so you can get anywhere up to 100kw at a greatly reduced cost. Of course, doing this takes a lot of knowledge and skill to do safely.