Electric Flight in Australia

 

Flightpower LiPo Cells

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Peter Pine
PO Box 1050
Kingscliff NSW 2487
Phone (02) 6674 0397
Fax (02) 6674 2037
E-mail: ppine@northnet.com.au 
 
  
 
 
 
 

  

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Lithium Polymer cells are one of the biggest breakthroughs in electric flight of recent times. High capacity and light weight are the big gains. Recently I met a guy flying a little pylon racer with a Mega brushless motor - he changed from NiMh to LiPo and the performance leap was dramatic - suddenly he had unlimited vertical performance - he could climb vertically for as long as he could see the aircraft!

Early LiPo cells were expensive, and would not deliver high amps. The latest generation Flightpower cells are capable of 20C with 30C bursts - and the price has come down. Just take care with the charging - the charging regime MUST be managed just as the instructions say, or you will have smoke and flames! Handled properly, they will revolutionise your flying.

The chart below lists the Flightpower battery packs currently available. The EVO-400, 800, 1200 designation refers to the mAh capacity of the pack. Each cell is 3.7V, so two cells in series (2S) will be 7.4V, and three cells 11.1V, etc. Each of these packs is 1P, or one lot of cells. To gain 2P (two lots of cells in parallel) you buy two packs and hook them up in parallel. Then you will have double the capacity, and double the Amp capability, but the same voltage. For example, an EVO-1200 3S1P pack will be 11.1V and capable of delivering 24A. Put two packs in parallel (3S2P) and you will still have 11.1V, but 2400 mAh capacity and 48A capability.
   

Cell type
Series/Parallel
Dimensions
Weight
Price
EVO-400
2S1P
6 x 35 x 72mm
31g
$29
EVO-400
3S1P
8 x 35 x 72mm
44g
$43
EVO-800
2S1P
10 x 35 x 72mm
51g
$34
EVO-800
3S1P
14 x 35 x 72mm
74g
$50
EVO-1200
2S1P
11 x 30 x 98mm
70g
$42
EVO-1200
3S1P
16 x 30 x 98mm
101g
$63
EVO-1500
2S1P
13 x 30 x 105mm
85g
$47
EVO-1500
3S1P
19 x 32 x 98mm
120g
$70
EVO-1800
2S1P
15 x 30 x 106
103g
$50
EVO-1800
3S1P
22 x 30 x 106
148g
$75
EVO-1800
4S1P
30 x 30 x 106mm
195g
$99
EVO-2170
2S1P
14 x 44 x 121mm
125g
$67
EVO-2170
3S1P
20 x 44 x121mm
177g
$99
EVO-2170
4S1P
27 x 44 x 121mm
228g
$125
EVO-2500
2S1P
14 x 38 x 123mm
125g
$75
EVO-2500
3S1P
21 x 40 x 120mm
196g
$112
EVO-2500
4S1P
29 x 40 x 125mm
254g
$149
EVO-2500
5S1P
35 x 38 x 123
320g
$188
EVO-3700
3S1P
19 x 44 x 142mm
267g
$163
EVO-3700
4S1P
26 x 44 x 142mm
346g
$212
EVO-3700
5S1P
33 x 44 x 142mm
425g
$262
EVO-3700
6S1P
40 x 44 x 142mm
534g
$312