A123 Battery Cells For the Radio Manage Model Airplane

Electric design airplanes are already all around for roughly three many years. A huge challenge  wholesale batteries     while in the early times was battery energy density. To put it differently, they simply just weighed excessive for the total of juice you could get outside of them. This situation has enhanced substantially in recent times with the introduction of Li-Poly cells, but a battery pack for a larger design can easily value countless pounds. The appearance of electric cars, like the Toyota Prius has spurred an enormous quantity of investigation into new battery systems. In the following paragraphs, I will explain an alternate to Li-Poly batteries that gives intriguing alternatives.

A123 Systems creates Lithium-Ion Nanophosphate cells. These cells use a nominal voltage of 3.3 volts and will face up to continual discharge rates of 30C. They may be properly discharged down to 2.0 volts. The voltage continues to be pretty consistent by way of the discharge cycle, nonetheless they do have a very sharp drop-off for the end. Be expecting 300 cycles prior to you observe any reduction in ability while at 1,000 cycles you will have 75% of the original potential. They're really safe. Overcharging or around discharging will not likely cause an explosion and may have small outcome on the lifestyle with the battery. Balancing the cells when they're charged remains to be an excellent strategy, but not unquestionably required. They may be billed instantly after use in 15 minutes.

The cells can be found in two dimensions. The first M1 cell incorporates a capacity of two.three Ah and weighs 70 grams (2.forty seven oz). A more moderen, smaller sized dimensions can keep 1.1 Ah and weighs forty grams (1.forty one oz).

The primary source for A123 M1 cells has been DeWalt 36-volt transportable power-tool battery packs. Every pack incorporates 10cells. I acquired two of these for $100 each and every through Ebay. The costs look to obtain gone up recently on the $120-$130 selection. One cells can also be purchased on-line for $15 from a increasing wide variety of vendors. You could discover two in the scaled-down cells in a very Black & Decker VPX battery pack which sells for about $15. The scaled-down cells can be had for $12.50 every single.

There are many Li-Poly chargers that support or may be modified to support the charging of these A123 cells. Because from 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 electrical power density of Li-Polys for about 45% in the price. For many of us, that is a fantastic trade-off. They are extremely safe and will be charged in 15 minutes. If you conclude up buying half as many battery packs because of the shorter charge time, then they become a much better value.