Lithium Polymer (LiPo) Battery FAQ
Topics: Batteries, Battery, Lithium Polymer, LiPo, Electric RC Helicopter, RC, Radio Control
Lithium Polymer Batteries is the favorite power source of electric radio-controlled models. They are relatively cheap, light, and hold lots of power. However, many new hobbyists may have some enquiries as to their operations.
Here are three frequently asked questions about them.
1. What is Cell Balancing?
Lithium Polymer batteries usually come packaged as a pack of more than two individual battery cells. For example, electric RC helicopters use 3-cell packs. Each of these battery cells has a nominal voltage of 3.7v; which means that each cell can operate when it maintains its charge between 3.0 to 4.2v. To go above or below or below this range can damage the cell and render it useless, or worse, become dangerously unstable and explode.
While the battery is in usage, the power drawn out of each cell is not equal. Therefore, at the end of each flight, the cells in the battery will be left out of balance. A non-balancing charger will stop charging the battery pack once the voltage of the overall pack is full without paying any attention to each cell. This causes the battery to be more and more unbalanced with each charge and would also result in a diminished performance of the battery pack.
A balance charger eliminates any unbalanced-cells symptoms of a battery pack by charging each cell individually; making sure that the cell’s voltage remain balanced at the end of each charge. In essence, balance charger lengthen the life of the battery back and maximizes its performance as well as keep the pack stable and safe to operate.
2. What is C rating?
A lot of radio-control fliers quickly grasp the meaning of most of the battery-associated acronyms but one: the C rating. In fact, many experts have tripped over themselves trying to explain it. However, I’ve heard a graspable explanation of it from an old Chinese battery manufacturer/expert very recently. Which is: The “C Rating” is the number which you multiply to the capacity of the battery to get its discharge rate.
Still confused? Basically, a 1000 mAh battery rated at 1C will provide 1000 mA of power for 1 hour. On the other hand, if the same pack was rated at 2C, it would provide 2000 mA of power for 30 minutes.
3. How fast can I charge a pack?
Each Lithium Polymer battery pack has a different maximum charge rate. It is very important to never ever charge at a rating above the specified rate! Most batteries have a label that specifies this vital information. However, if the maximum charge rate is not specified, keep in mind that most Lipos are made to be charged at a rate of 1C. Which means a 1000 mAh pack can be charged at 1A and a 500mAh pack can be charged at 0.5A. Once again, never ever exceed the maximum charge rate lest the battery explodes!
Radio-controlled aviation is a fascinating hobby. Learn all about its newest and fastest growing sector, electric RC helicopters at www.electric-rc-helicopter.com.
Previous Articles Highlighter:
Gary Rhodes Cooks In Grenada (1)
A Grenadine restaurant with local dishes on the menu, having Rhodes on board is attracting returning and new guests every year. This is a definite must for a stopover for people on package holiday tours of Grenada.
Online Flights, Hotels And Holidays Booking In India - Tips And Tricks To Beat Travel Portal Price (2)
So it is not only the portals that you offer you the best deal and there is no compelling reason to be loyal to only one portal. Spend some time on research and pick up the best deal whoever offers it to you.
Gordon Ramsay Cooks Up A Storm In Dubai (3)
Travel Collection offer package tour holidays to destinations all around the world. www.travelcollection.co.uk has all the information you need to help you select the destination and package holiday that is right for you.
Decide Your Sagacious Moves As You Play The FlyOrDie Chess Game (4)
It is about improving each and every time you play. Play the flyordie chess match and see if your gaming wits and strategies can outplay other competitors! Sean enjoys playing online chess on FlyOrDie Chess.
7 Must Have Golf Career Profiles (5)
There are many desirable careers in the golf industry. Next time someone tells you you'll never make it as a golfer, be prepared to rattle off all of the prestigious careers in the industry, starting with these seven.
Various Factors To Take Into Consideration If You Are Searching For A BMW Cincinnati Dealership (6)
Listen to Corbin Newlyn as he shares his insights as an expert author and an avid writer in the automotive field. If you would like to learn more go to www.bmwproonline.com and at www.bmwproonline.com
Finding A Cruise That Meets Your Needs (7)
The cruise lines have responded to this trend by integrating into their cruise packages activities catered for young children on board plus facilities like playrooms, video game rooms and fun-filled activities to keep children entertained while their parents get some rest and relaxation.
What Is There In Sacramento (8)
But what sets Sacramento apart is that it is also a good place to unwind, making it a perfect destination for mixing business with pleasure. Sacramento features some of the best hotels, restaurants, nightclubs, shopping experience, as well as various historical attractions that makes this city a fun filled business destination.
Water Sport Activities In Phuket (9)
Also, a must do water sport activity in Phuket is yachting, with a variety of yachts and speed boat charter services that go with every pocket and taste and preference.
Deciding On A Golf Degree, Surprising Advantages (10)
You can still have a fun time as you learn, but with an instructor helping you every step of the way, you improve rapidly and dramatically. Of course, when you pursue a golf degree, you also save time and money at your local golf course.
Newer Articles Highlighter:
Luxury At The Burj Al Arab Hotel (1)
There is plenty to keep you occupied for the duration of your stay whether you are staying in the hotel or visiting one of many sites. You have plenty to choose from in the spa and beauty club including treatment rooms, hydrotherapy baths, oriental massage, a stand up solarium, sauna, steam rooms, jacuzzi, two infinity pools, two fully equipped fitness studios and an aerobics floor.
A Beginner's Guide To Hitting The Waves (Without Splashing Out) (2)
Places to find surfing equipment Online surf shops allow you to avoid paying a premium for shop-floor space, and benefit from an extended product line that extends well beyond standard surfboards and wetsuits to include things like training DVDs and books to keep you inspired.
Some Of The Main Reasons Your Really Need To Wear A Bike Helmet When Bicycling (3)
Though you can not stop accidents you can still wear your helmet and protect what you can while riding. Some bike accidents aren't even that bad but you should still always where your helmet.
2007 Tourists Numbers Up For Malta (4)
Both routes have attracted good seat occupancy levels, with tourist numbers in Malta rising. The new route will run between Bremen in Germany to Malta and will be a welcome addition for Malta's attempt to attract more German tourists to the island.
Holiday Insurance - A Necessity Or A Luxury? You Decide (5)
It's a little bit amazing how often that can happen. Be informed: Cancellation insurance is different from the cancellation waiver that some travel agencies will offer. A conscientious traveler knows the difference.
How To Choose A Good And Comfortable Men's Walking Shoe (6)
There are all kinds of trainer shoes a couple of those are racing flats and race walkers. Racing flats are a type of shoe that lacks stability and comfort and is for more of a fast runner or walker.
Tourism Season In Full Bloom On Prince Edward Island (7)
So much sand, in fact, that it comes in your choice of white, champagne, pink or red. And the waves rolling onto the shore are some of the warmest waters you'll find north of the Carolinas.
Maine Vacation Rivaled By That Of Prince Edward Island (8)
Hundreds of miles of hiking or cycling paths run from tip of the island to the other end. Through its network of national and provincial parks, Prince Edward Island offers up picture perfect flora and fauna, enough to seduce visitors into many late-afternoon strolls.
Writing Article Reviews (9)
Search Google for other review articles and compile the points you would like to highlight/summarize in your own words. Include the good and the bad comments of the customer's experience that you found.
Write Your First Book To Build Multiple Streams Of Income (10)
In an ongoing basis you want to review your modules of information and nuggets of information and chunk it into shorter articles, blogs and columns which you will promote everywhere you can online and in print.