Ever wonder what all those numbers on your LiPo battery mean? Most battery packs have the same type of information but what does it all represent? In this series we will look at the information presented on the battery pack and explain what they mean.
Let’s start with the battery configuration.
This tells us how the battery pack is configured. The ‘s’ part represents how many cells are connected in series while the ‘p’ part is for how many cells are connected in parallel. Our sample is read as “2-series, 1-parellel”. Meaning the pack is made up of two cells connected in series and one of these series connected cells connected in parallel. Okay, the part about having the cells connected in parallel in this example is a bit confusing…refer to images..
Again, the s represents how many cells are connected in series. The p represents how many of the series connected cells are connected in parallel. The more cells connected in series will give you more voltage potential while the more cells connected in parallel will give your more capacity.
Say we have some LiPo cells rated at 1000mAh. These individual cells have a voltage of 3.7 volts. If two of these cells were connected in series we would have a battery pack with a voltage of 7.4 volts and a capacity rating of 1000mAh. If three cells were connected in series the pack will be 11.1 volts with a capacity of 1000mAh….and so on for cells connected in series. Cells in series = more volts with the same mAh.
|Cells in Series||Voltage||Capacity|
Now lets connect these cells in parallel. With 2 cells in parallel would result in a battery pack with a voltage of 3.7 volts and a capacity of 2000mAh. With 3 cells in parallel, the voltage would stay the same 3.7volts but the capacity would increase to 3000mAh…and so on. Cells in parallel = same volts with more mAh.
|Cells in Parallel||Voltage||Capacity|
The cells connected in series and parallel are combined together to give battery packs of various configurations. Generally packs with higher voltages would produce more power and packs with higher capacity (mAh) would produce longer run times. This is dependant on the other ratings of the battery (like available amps) and the application the battery is use in.
In the next parts of the series we’ll cover the other ratings related to batteries! See you then!!