A123 Battery Cells For your personal Radio Command Model Plane

Electrical model airplanes are actually around for roughly a few decades. A massive problem  http://www.h-squared.co.uk/     within the early times was battery energy density. To put it differently, they simply weighed a lot of for that total of juice you could potentially get away from them. This example has enhanced considerably lately with the advent of Li-Poly cells, but a battery pack for a bigger design can easily cost many bucks. The arrival of electric cars and trucks, including the Toyota Prius has spurred an infinite sum of investigation into new battery systems. On this page, I'll explain an alternate to Li-Poly batteries that offers intriguing choices.

A123 Units provides Lithium-Ion Nanophosphate cells. These cells have got a nominal voltage of three.3 volts and can withstand continual discharge costs of 30C. They are often safely discharged right down to 2.0 volts. The voltage stays quite frequent by means of the discharge cycle, but they do have a very sharp drop-off in the end. Anticipate 300 cycles just before you observe any reduction in capability while at 1,000 cycles you are going to have 75% with the authentic capacity. They may be extremely safe and sound. Overcharging or about discharging won't result in an explosion and can have minor influence over the lifestyle with the battery. Balancing the cells when they are billed remains to be a good plan, but not certainly demanded. They are often billed quickly after use in fifteen minutes.

The cells can be found in two measurements. The original M1 mobile features a ability of two.three Ah and weighs 70 grams (2.47 oz). A newer, scaled-down sizing can maintain 1.1 Ah and weighs 40 grams (1.41 oz).

The first source for A123 M1 cells has actually been DeWalt 36-volt moveable power-tool battery packs. Every single pack has 10cells. I procured two of those for $100 each through Ebay. The prices surface to have long gone up recently to the $120-$130 variety. One cells can also be acquired on line for $15 from the expanding range of vendors. You'll be able to obtain two in the more compact cells in the Black & Decker VPX battery pack which sells for about $15. The smaller sized cells may also be had for $12.50 just about every.

There are many Li-Poly chargers that support or could be modified to support the charging of those A123 cells. Because in 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 cell is reached.

Bottom line? These cells give you 70% the power density of Li-Polys for about 45% from the price. For many of us, that is a very good trade-off. They are extremely risk-free and might be billed in 15 minutes. If you end up buying half as many battery packs because from the shorter charge time, then they become a a lot better value.