Saturday, November 9, 2013

Lithium Polymer batteries are known to be lightweight in comparison with Nickel Cadmium batteries ko


It goes without saying that one of the crucial koreasat 5 components of RC helicopters or RC toys for that matter is their batteries. Battery technology has evolved in the last few years and this ensured longer flying hours and added reliability to RC helicopters. Had the battery technology not evolved, many RC models in our possessions today would have remained ridiculously expensive or inaccessible for the common man. A wide range of battery technologies are available today, ranging from Lithium Polymer (Li-Po), Nickel Cadmium (Ni-Cd) and Nickel Metal Hybrid (Ni-Mh).
It is important to understand each type of battery for RC helicopters, how they function, their charging time and lifespan, so that you can ensure longevity koreasat 5 of your RC helicopters. There are many incidents of crashes primarily because of the poor maintenance of RC helicopter batteries. Compared to the price of an RC helicopter, batteries are relatively inexpensive and it is a wise idea to maintain them properly to avoid permanent damage to the more expensive helicopter itself.
If you are new to RC helicopters, terms such as 7.4V, 2700 mAh etc. can confuse you. What does a 7.4v 1500mAh 2S 30C battery mean to your helicopter? The typical voltage of a Lithium Polymer batter is 3.7volts. So a 2S, 7.4v battery means it has two cells of 3.7volts! If you at least have primary school education, you already know what v stands for! v stands koreasat 5 for volts. However, you can get confused with the Kv ratings on brushless motors in RC helicopters. The Kv on RC helicopters doesn t stand for 1 kilovolt (1,000 volts) as many beginners think. Instead it represents how many RPM (rotations per minute) the motor can do per volt.
mAh Anyone with a basic understanding of helicopters would have already figured out that the mAh ratings on battery somehow represents power. But what to make out of this rating koreasat 5 is an unanswerable question for many. Let s take the 1500mAh rating on our example: what does it really mean? Thousand milliamps is equal to 1Amp. A 1,500mAh battery can power a 1 amp motor for 1.5 hours. If the motor capacity is 10 amps, the same will fall to 1.5 minutes! If you increase the mAh, you can propel your helicopter to longer durations. Many RC owners push the flying limit of their helicopters with larger battery packs till the power to weight ratio stays within the acceptable category. koreasat 5
The C rating What does the 30C on the battery stand for? C on battery ratings stands koreasat 5 for capacity. C rating is used to tell you how fast a battery s charge can be consumed (discharged). A 1500mAh battery can be discharged at a rate of 45amps or 45,000mAh!
Lithium Polymer batteries are known to be lightweight in comparison with Nickel Cadmium batteries koreasat 5 with a similar capacity. koreasat 5 This makes your RC helicopter significantly lighter. A lighter koreasat 5 helicopter naturally koreasat 5 tends to be faster and cover longer distances. Similarly, the chemical structure of Li-Po batteries results in much lesser internal resistance. In layman s terms, a lithium polymer battery do not waste energy overheating, which means every drop of charge is used to power your RC helicopter s turbine. They also offer higher voltage in real life situations, which makes your RC toys faster and energy efficient.
A combination of these properties makes Li-Po batteries the most desirable choice for RC toys owners that prefer power and longevity with each flying session. Moreover, Li-Po batteries can be practically made into any size and shape. In the past, electric flight was not a viable option because koreasat 5 of shorter flying koreasat 5 durations and underpowered engines. However, LiPo batteries could successfully replace the fuel powered RC heli engines to a large extent by offering koreasat 5 equivalent power and being practical alternatives.
Structure Li-Po batteries, as the name suggests, uses a Lithium chemical base and is suspended in a polymer matrix (now you know from where the name Li-Po came). The average cell voltage of a Li-Po battery is 3.7 volts, the operational voltage ranging between 3.3v and 4.2v.
Safety Li-Po batteries are proven to be safe and user-friendly koreasat 5 under normal operational circumstances but they are not known to take mishandlings really well. If you were to use Li-Po batteries for your RC helicopters, be prepared to be a careful handler of these batteries.
Lithium Polymer batteries are prone to damage if mishandled. Physical damage to the batteries can cause explosion. Overcharging and complete discharging can also damage koreasat 5 these batteries. This is why the batteries need extra care. Once the battery is removed from the storage, it is put under core inspection for any damages like dents, scratches, punctures, swelling, broken cells, heat shrink or distorted wires. After confirming that the battery koreasat 5 is under perfect condition, it is connected to an open circuit voltmeter koreasat 5 and a lowest pack voltage is out to 3.3 V for every cell. For instance, a pack with 3 cells has 9.9

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