TP/FP balancing connector INSTALLED!!!!

A123 2300mAh up to 46A/69A burst A123 2300 4S (13.2V) Rating: 20/30C Norm/Max Discharge Output: 13.2V Nominal, 2300mAh Dimensions/wt: 4 1/8" x 2 7/8" x 1 1/8", 11.65 oz. 105mm x 73mm x 27mm, 330g A123 2300 5S (16.5V) Rating: 20/30C Norm/Max Discharge Output: 16.5V Nominal, 2300mAh Dimensions/wt: 5 1/4" x 2 7/8" x 1 1/8", 14.5 oz. 135mm x 73mm x 27mm, 410g A123 2300 6S (19.8V) Rating: 20/30C Norm/Max Discharge Output: 19.8V Nominal, 2300mAh Dimensions/wt: 6 1/4" x 2 7/8" x 1 1/8", 17.65 oz. 160mm x 73mm x 27mm, 500g

More information (links):
* Data Information Sheet 2300mAh

A123 cells use a patented "Nanophosphate" LiFePO4 chemistry to provide an alternative to Lithium Polymer (Li-poly) type batteries. Each type has its own advantages. Quality made Lithium Polymer such as Thunder Power or FlightPower Lite, EVO 25, and EVO 30 series offer the highest possible energy and power density. That means that they pack more total power per gram, and are able to discharge more power in a given time per gram compared to LiFePO4 A123

A123-Brand cells do offer some important advantages:
SAFETY - LiFePO4 A123 cells are not prone to "thermal runaway" when subjected to over-voltage charging. As a result, it is extremely unlikely that they could catch fire, even if you or your charger make a mistake in settings.

FAST CHARGE - LiFePO4 A123 cells can be safely charged at rates up to 5C! That means that charging can be accomplished in as little as 15 minutes. A Li-poly pack takes more than twice that long, at best. If you compare a Li-poly battery pack with an A123 battery pack of the same weight, you will typically get more flight time from the Li-poly pack "Per Flight". But when you consider the fast charge capability of the A123 LiFePO4 pack, you may well get much more total Flight Time per Day.

CYCLE LIFE - A123 data states a maximum discharge rate of 30C. While the cells are capable of 30C continuous rates, voltage will drop substantially. As such, our extensive tests lead us to recommend Prop/Motor/Battery combinations such that 20C is the maximum current drawn when the A123 pack is freshly charged. Tests show that when used properly the A123 packs are capable of well over +300 cycles with less than 15% drop in capacity.

SHELF LIFE - In addition to their excellent cycle life, A123 LiFePO4 cells have been shown to degrade very little over a two-year period while unused. Even the best Li-poly may lose 10% capacity or more over two years of storage. Poor quality Li-poly may become unusable in less then a year, by comparison.

DURABLE CONSTRUCTION - The cylindrical A123 cell construction is more durable than typical Li-poly cells, and so less likely to incur daily dents, dings, and damage from light crashes.

Total Cost of Ownership - A123 LiFePO4 cylindrical cells are very reasonably priced in comparison to quality Li-poly alternatives "Up Front". But the real value comes in over time, as the long Cycle Life, long Shelf Life, and Durable Construction all combine to lower the total cost per flight over the life of an A123 battery pack. In other words, you get a lot more flights for the money you spend. In particular, don't be fooled by the low initial cost of "some" Li-poly packs. In many cases these packs provide even less energy density than LiFePO4 cells, can not be safely fast charged and often last less than 20 flights before "worn out".

So does that mean everyone should rush to A123 cells, rather than high-quality Li-poly? Not necessarily. It really depends on what your needs and preferences are. For applications that require maximum power and minimum weight - such as EDF Jets, "Serious 3D" Aerobatic models, Thermal Gliders, and Pylon racers - Lithium Polymer clearly remain the best choice. But if you don't mind a little more weight (and/or less time per flight), then the A123 may offer irresistible advantages for you.