Battery basic

Whether you are involved in electric or glow-powered flight, rechargeable batteries have a dramatic impact on the performance of your particular model. Combine the varying range of experience that someone might have before they even pick up a radio with the numbers of different battery types, chemistries, and capacity and it can be rather easy for someone to do the wrong thing when it comes to battery selection or maintenance. Quite often people may damage or otherwise reduce the life of their rechargeable cells before they even use them for the first time. While it may seem like there are too many different types of cells and it might seem confusing, knowledge is power.
Choosing the Right Pack for You:
Regardless of what type of model you will be using your particular battery in, there will undoubtedly be a number of different chemical compositions to choose from.
Nickel Cadmium (NiCd), Nickel Metal Hydride (NiMH), and Lithium Polymer (LiPo) cells are currently the most commonly used, but each needs to be charged, discharged, and stored differently. On top of that, each model may require a different cell count or battery configuration as well. To determine what pack configuration you will need, check the owner¡¯s manual of your particular model for more info. The battery you will need should be listed in the ¡°Items Needed to Complete¡± section of your manual.
Battery Basics:
One of the most common misconceptions about batteries and battery packs is that a battery pack is made up of one very large battery. Truth be known, a battery pack is actually constructed from a number of individual batteries, called cells, that have been connected together to work as a single pack. There are two ways that the cells can be connected together. The first is called ¡°Series¡±, where the positive terminal of one cell is wired to the negative terminal of another cell. This method is used when you want to increase the output voltage of the total battery pack, as the individual cell voltages are actually combined to create one large voltage output. For example, a 6-cell NiCd or NiMH pack is made up of cells rated at a nominal 1.2 volts each. When wired in series, you take the individual voltage (1.2V in this case) and multiply that by the number of cells in the pack (6) to get the total pack nominal voltage. If you do the math, you¡¯ll see that a 6-cell pack has a total nominal voltage of 7.2 volts. This is the most common cell connection method found in the RC hobby.


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