A123 Battery Cells For your personal Radio Command Product Plane

Electric model airplanes have been close to for about 3 a long time. A large trouble  http://www.h-squared.co.uk/     inside the early days was battery electricity density. Quite simply, they basically weighed too much for your total of juice you might get from them. This case has enhanced radically in recent years with all the introduction of Li-Poly cells, but a battery pack for a bigger design can easily price a huge selection of dollars. The appearance of electrical cars, such as the Toyota Prius has spurred an infinite volume of analysis into new battery technologies. In this article, I'll describe another to Li-Poly batteries that provides intriguing prospects.

A123 Devices generates Lithium-Ion Nanophosphate cells. These cells possess a nominal voltage of 3.3 volts and might withstand continuous discharge prices of 30C. They may be securely discharged all the way down to 2.0 volts. The voltage stays reasonably regular via the discharge cycle, nevertheless they do use a sharp drop-off within the stop. Assume 300 cycles in advance of you discover any reduction in ability while at one,000 cycles you can expect to have 75% with the initial potential. They are incredibly protected. Overcharging or about discharging is not going to lead to an explosion and may have very little outcome within the lifetime from the battery. Balancing the cells when they're charged remains to be a superb plan, although not unquestionably expected. They are often charged instantly soon after use in 15 minutes.

The cells are available in two sizes. The initial M1 mobile features a potential of 2.three Ah and weighs 70 grams (2.47 oz). A more recent, smaller sized dimension can maintain 1.1 Ah and weighs forty grams (1.forty one oz).

The primary source for A123 M1 cells has actually been DeWalt 36-volt transportable power-tool battery packs. Every pack contains 10cells. I ordered two of these for $100 every via Ebay. The costs look to acquire gone up not too long ago to your $120-$130 range. One cells can also be purchased online for $15 from the increasing variety of vendors. You may obtain two with the scaled-down cells inside a Black & Decker VPX battery pack which sells for about $15. The scaled-down cells can be had for $12.50 each and every.

There are many Li-Poly chargers that support or might be modified to support the charging of those A123 cells. Because with the sharp voltage drop-off when discharged, you are probably better off using a timer when you fly. Otherwise you need your ESC to shut off the motor when two.0 volts per mobile is reached.

Bottom line? These cells give you 70% the energy density of Li-Polys for about 45% on the price. For many of us, that is a very good trade-off. They can be extremely safe and may be charged in 15 minutes. If you stop up buying half as many battery packs because in the shorter charge time, then they become a substantially better value.