Lithium Polymer battery referred as Lipo Battery is widely used rechargeable battery in most of the electronic industries for the operating the electronic device. It also been used as the power source in radio controlled industries for running the drones or RC models.Much lighter weight, and can be made in almost any size or shape.Much higher capacities, allowing them to hold much more power.Much higher discharge rates, meaning they pack more punch.The sensitive chemistry can lead to a fire if the battery gets punctured.Need special care for charging, discharging, and storage.
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Voltage and cell count:
A LiPo cell has a nominal voltage, Maximum voltage, and minimum voltage. The nominal voltage of a single cell is 3.7V. The maximum voltage of the single is 4.2V and the minimum is 3.2V If the battery is return as 11.1V on it, that means that there are three cells connected in series. In the LiPo batteries, you might have seen a battery pack described as "3S2P". This meant that there were actually three cells in the battery; two cells wired in series, and two more wired into the first two batteries in parallel This terminology is not used much nowadays; modern technology allows us to have the individual cells hold much more energy than they could only a few years ago.
C Rating (Discharge Rating):
The C Rating is simply a measure of how fast the battery can be discharged safely and without harming the battery. One of the things that makes it complicated is that it's not a stand-alone number; it requires you to also know the capacity of the battery to ultimately figure out the safe amp draw (the "C" in C Rating actually stands for Capacity). Once you know the capacity, it's pretty much a plug-and-play math problem. Knowing that, I can safely say that a 2S 5000mAh 20C LiPo will be sufficient, and will in fact have more power than we need. Remember, it has a maximum safe continuous discharge rating of 100A, more than enough to handle the 65A the Velineon motor will draw. Similarly, the Burst Rate of 150A easily covers the 100A the motor could draw.
Charging Method:
It's important to use a LiPo compatible charger for LiPo. LiPo batteries require specialized care. They charge using a system called CC/CV charging. It stands for Constant Current / Constant Voltage. Basically, the charger will keep the current, or charge rate, constant until the battery reaches its peak voltage (4.2v per cell in a battery pack). Then it will maintain that voltage, while reducing the current. Charging a LiPo battery in this way can have damaging effects, so it's important to have a LiPo-compatible charger.
